diff --git a/apps/server/src/testing/http/customer-audit.integration.test.ts b/apps/server/src/testing/http/customer-audit.integration.test.ts
new file mode 100644
index 00000000..d6521151
--- /dev/null
+++ b/apps/server/src/testing/http/customer-audit.integration.test.ts
@@ -0,0 +1,314 @@
+import assert from "node:assert/strict";
+import { randomUUID } from "node:crypto";
+import test from "node:test";
+
+import { type IModuleServer, SequelizeTransactionManager } from "@erp/core/api";
+import type { ICustomerPublicServices } from "@erp/customers/api";
+import { Country, CurrencyCode, LanguageCode, Name, UniqueID } from "@repo/rdx-ddd";
+import { Maybe, Result } from "@repo/rdx-utils";
+import type { Request, Response } from "express";
+
+import { AuditChangeModel, AuditEventModel } from "@/infrastructure/audit/sequelize";
+
+import { CustomerStatus } from "../../../../../modules/customers/src/api/domain";
+import { CustomerModel } from "../../../../../modules/customers/src/api/infrastructure/persistence/sequelize/models/sequelize-customer.model";
+import { requireIdentityTenantMembership } from "../../../../../modules/identity/src/api/infrastructure/express/middlewares/require-identity-middlewares";
+
+import {
+  buildCompanyHeaders,
+  createTestAccount,
+  createTestCompany,
+  createTestMembership,
+  loginByApi,
+} from "./http-test-fixtures";
+import { createHttpTestRuntime } from "./http-test-runtime";
+
+const publicCustomerCreateProbe: IModuleServer = {
+  name: "customer-public-create-probe",
+  version: "1.0.0",
+  dependencies: ["customers", "identity"],
+  start: (params) => {
+    const customerServices = params.getService<ICustomerPublicServices>("customers:general");
+
+    params.app.post(
+      "/api/v1/__test/customers/public-create",
+      ...requireIdentityTenantMembership(params),
+      async (request: Request, response: Response) => {
+        const companyIdResult = UniqueID.create(request.header("x-company-id") ?? "");
+        if (companyIdResult.isFailure) {
+          response.status(400).json({ success: false });
+          return;
+        }
+
+        const transactionManager = new SequelizeTransactionManager(
+          params.database,
+          params.transactionContext
+        );
+        const customerId = UniqueID.generateNewID();
+        try {
+          const result = await transactionManager.complete(async (transaction) => {
+            const customerResult = await customerServices.createCustomer(
+              customerId,
+              {
+                companyId: companyIdResult.data,
+                status: CustomerStatus.createActive(),
+                reference: Maybe.none(),
+                isCompany: true,
+                name: Name.create("FactuGES customer").data,
+                tradeName: Maybe.none(),
+                tin: Maybe.none(),
+                address: {
+                  street: Maybe.none(),
+                  street2: Maybe.none(),
+                  city: Maybe.none(),
+                  province: Maybe.none(),
+                  postalCode: Maybe.none(),
+                  country: Maybe.some(Country.create("ES").data),
+                },
+                emailPrimary: Maybe.none(),
+                emailSecondary: Maybe.none(),
+                phonePrimary: Maybe.none(),
+                phoneSecondary: Maybe.none(),
+                mobilePrimary: Maybe.none(),
+                mobileSecondary: Maybe.none(),
+                fax: Maybe.none(),
+                website: Maybe.none(),
+                legalRecord: Maybe.none(),
+                paymentMethodId: Maybe.none(),
+                paymentTermId: Maybe.none(),
+                taxRegimeCode: Maybe.none(),
+                usesEquivalenceSurcharge: false,
+                usesRetention: false,
+                languageCode: LanguageCode.create("es").data,
+                currencyCode: CurrencyCode.create("EUR").data,
+              },
+              { companyId: companyIdResult.data, transaction }
+            );
+            if (customerResult.isFailure) {
+              return customerResult;
+            }
+
+            if (request.query.rollback === "true") {
+              return Result.fail(new Error("forced public customer rollback"));
+            }
+
+            return Result.ok({ customerId: customerId.toPrimitive() });
+          });
+
+          response
+            .status(result.isSuccess ? 201 : 409)
+            .json(result.isSuccess ? result.data : { success: false });
+        } catch {
+          response.status(409).json({ success: false });
+        }
+      }
+    );
+  },
+};
+
+test("customers registra create, update y el create público en MariaDB", async (t) => {
+  const runtime = await createHttpTestRuntime({ testModules: [publicCustomerCreateProbe] });
+  t.after(async () => runtime.stop());
+
+  const account = await createTestAccount(runtime.database, {
+    email: `customer-audit-${randomUUID()}@example.test`,
+    password: "Password123!",
+  });
+  const company = await createTestCompany(runtime.database, {
+    legalName: "Customer audit company",
+  });
+  await createTestMembership(runtime.database, {
+    accountId: account.id,
+    companyId: company.id,
+  });
+  const loginResponse = await loginByApi({
+    request: runtime.request,
+    email: account.email,
+    password: account.password,
+  });
+  assert.equal(loginResponse.status, 200);
+  const accessToken = (loginResponse.body as { access_token: string }).access_token;
+  const customerId = randomUUID();
+
+  const createResponse = await runtime.request("/api/v1/customers", {
+    method: "POST",
+    headers: {
+      ...buildCompanyHeaders({ accessToken, companyId: company.id }),
+      "content-type": "application/json",
+      "x-correlation-id": "customer-create-correlation",
+    },
+    body: JSON.stringify({
+      id: customerId,
+      is_company: true,
+      name: "Acme",
+      tin: "B12345678",
+      address: { country: "ES", postal_code: "28001" },
+      contact: { email_primary: "contact@acme.test" },
+      uses_retention: false,
+      language_code: "es",
+      currency_code: "EUR",
+      payment_term_id: null,
+    }),
+  });
+  assert.equal(createResponse.status, 201);
+
+  const createdEvent = await AuditEventModel.findOne({
+    where: { action: "customer.created", target_id: customerId },
+  });
+  assert.ok(createdEvent);
+  assert.equal(createdEvent.source_type, "application");
+  assert.equal(createdEvent.source_id, "uecko-erp");
+  assert.equal(createdEvent.origin, "http");
+  assert.equal(createdEvent.operation_id, createResponse.headers.get("x-request-id"));
+  assert.equal(createdEvent.correlation_id, "customer-create-correlation");
+  assert.equal(createdEvent.actor_type, "user");
+  assert.equal(createdEvent.actor_id, account.id);
+  assert.equal(createdEvent.scope_type, "company");
+  assert.equal(createdEvent.scope_id, company.id);
+  assert.equal(createdEvent.target_type, "customer");
+  assert.equal(createdEvent.target_label, "Acme");
+
+  const updateResponse = await runtime.request(`/api/v1/customers/${customerId}`, {
+    method: "PUT",
+    headers: {
+      ...buildCompanyHeaders({ accessToken, companyId: company.id }),
+      "content-type": "application/json",
+      "x-correlation-id": "customer-update-correlation",
+    },
+    body: JSON.stringify({
+      name: "Acme updated",
+      uses_retention: true,
+      address: { postal_code: "08001" },
+      contact: { email_primary: "billing@acme.test" },
+    }),
+  });
+  assert.equal(updateResponse.status, 200);
+
+  const updatedEvent = await AuditEventModel.findOne({
+    where: { action: "customer.updated", target_id: customerId },
+  });
+  assert.ok(updatedEvent);
+  assert.equal(updatedEvent.target_label, "Acme updated");
+  assert.equal(updatedEvent.operation_id, updateResponse.headers.get("x-request-id"));
+  assert.equal(updatedEvent.correlation_id, "customer-update-correlation");
+  const updatedChanges = await AuditChangeModel.findAll({
+    where: { audit_event_id: updatedEvent.id },
+    order: [["position", "ASC"]],
+  });
+  assert.deepEqual(
+    updatedChanges.map((change) => ({
+      path: change.path,
+      kind: change.kind,
+      before: change.before_value,
+      after: change.after_value,
+    })),
+    [
+      { path: "address.postalCode", kind: "change", before: "28001", after: "08001" },
+      {
+        path: "emailPrimary",
+        kind: "change",
+        before: "contact@acme.test",
+        after: "billing@acme.test",
+      },
+      { path: "name", kind: "change", before: "Acme", after: "Acme updated" },
+      { path: "usesRetention", kind: "change", before: false, after: true },
+    ]
+  );
+
+  const auditEventsBeforeNoop = await AuditEventModel.count({
+    where: { action: "customer.updated", target_id: customerId },
+  });
+  const noopResponse = await runtime.request(`/api/v1/customers/${customerId}`, {
+    method: "PUT",
+    headers: {
+      ...buildCompanyHeaders({ accessToken, companyId: company.id }),
+      "content-type": "application/json",
+    },
+    body: JSON.stringify({}),
+  });
+  assert.equal(noopResponse.status, 200);
+  assert.equal(
+    await AuditEventModel.count({ where: { action: "customer.updated", target_id: customerId } }),
+    auditEventsBeforeNoop
+  );
+
+  const auditEventsBeforeIdenticalUpdate = await AuditEventModel.count({
+    where: { action: "customer.updated", target_id: customerId },
+  });
+  const identicalUpdateResponse = await runtime.request(`/api/v1/customers/${customerId}`, {
+    method: "PUT",
+    headers: {
+      ...buildCompanyHeaders({ accessToken, companyId: company.id }),
+      "content-type": "application/json",
+    },
+    body: JSON.stringify({
+      name: "Acme updated",
+      uses_retention: true,
+      language_code: "es",
+    }),
+  });
+  assert.equal(identicalUpdateResponse.status, 200);
+  const unchangedCustomer = await CustomerModel.findByPk(customerId);
+  assert.ok(unchangedCustomer);
+  assert.equal(unchangedCustomer.name, "Acme updated");
+  assert.equal(unchangedCustomer.uses_retention, true);
+  assert.equal(unchangedCustomer.language_code, "es");
+  assert.equal(
+    await AuditEventModel.count({ where: { action: "customer.updated", target_id: customerId } }),
+    auditEventsBeforeIdenticalUpdate
+  );
+
+  const auditEventsBeforeNotFound = await AuditEventModel.count();
+  const notFoundResponse = await runtime.request(`/api/v1/customers/${randomUUID()}`, {
+    method: "PUT",
+    headers: {
+      ...buildCompanyHeaders({ accessToken, companyId: company.id }),
+      "content-type": "application/json",
+    },
+    body: JSON.stringify({ name: "Missing" }),
+  });
+  assert.equal(notFoundResponse.status, 404);
+  assert.equal(await AuditEventModel.count(), auditEventsBeforeNotFound);
+
+  const publicCreateResponse = await runtime.request("/api/v1/__test/customers/public-create", {
+    method: "POST",
+    headers: {
+      ...buildCompanyHeaders({ accessToken, companyId: company.id }),
+      "x-correlation-id": "customer-public-create-correlation",
+    },
+  });
+  assert.equal(publicCreateResponse.status, 201);
+  const publicCustomerId = (publicCreateResponse.body as { customerId: string }).customerId;
+  assert.ok(await CustomerModel.findByPk(publicCustomerId));
+  const publicEvent = await AuditEventModel.findOne({
+    where: { action: "customer.created", target_id: publicCustomerId },
+  });
+  assert.ok(publicEvent);
+  assert.equal(publicEvent.correlation_id, "customer-public-create-correlation");
+  assert.equal(publicEvent.scope_id, company.id);
+  assert.equal(publicEvent.actor_id, account.id);
+
+  const auditChangesBeforeRollback = await AuditChangeModel.count();
+  const rollbackResponse = await runtime.request(
+    "/api/v1/__test/customers/public-create?rollback=true",
+    {
+      method: "POST",
+      headers: {
+        ...buildCompanyHeaders({ accessToken, companyId: company.id }),
+        "x-correlation-id": "customer-public-rollback-correlation",
+      },
+    }
+  );
+  assert.equal(rollbackResponse.status, 409);
+  assert.equal(
+    await CustomerModel.count({ where: { company_id: company.id, name: "FactuGES customer" } }),
+    1
+  );
+  assert.equal(
+    await AuditEventModel.count({
+      where: { correlation_id: "customer-public-rollback-correlation" },
+    }),
+    0
+  );
+  assert.equal(await AuditChangeModel.count(), auditChangesBeforeRollback);
+});
diff --git a/modules/customers/package.json b/modules/customers/package.json
index a1940677..e0e395ae 100644
--- a/modules/customers/package.json
+++ b/modules/customers/package.json
@@ -41,6 +41,7 @@
     "@hookform/resolvers": "^5.2.2",
     "@repo/i18next": "workspace:*",
     "@repo/rdx-criteria": "workspace:*",
+    "@repo/rdx-audit": "workspace:*",
     "@repo/rdx-ddd": "workspace:*",
     "@repo/rdx-logger": "workspace:*",
     "@repo/rdx-ui": "workspace:*",
@@ -57,4 +58,4 @@
     "use-debounce": "^10.1.1",
     "zod": "^4.3.6"
   }
-}
\ No newline at end of file
+}
diff --git a/modules/customers/src/api/application/audit/customer-audit.test.ts b/modules/customers/src/api/application/audit/customer-audit.test.ts
new file mode 100644
index 00000000..1cc69d31
--- /dev/null
+++ b/modules/customers/src/api/application/audit/customer-audit.test.ts
@@ -0,0 +1,110 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+import {
+  City,
+  Country,
+  CurrencyCode,
+  EmailAddress,
+  LanguageCode,
+  Name,
+  PhoneNumber,
+  PostalCode,
+  Province,
+  Street,
+  TINNumber,
+  URLAddress,
+  UniqueID,
+} from "@repo/rdx-ddd";
+import { Maybe } from "@repo/rdx-utils";
+
+import { Customer, CustomerStatus } from "../../domain";
+
+import { toCustomerAuditState, toCustomerAuditTarget } from "./customer-audit";
+
+const unwrap = <T>(result: { data: T; isSuccess: boolean }): T => {
+  assert.equal(result.isSuccess, true);
+  return result.data;
+};
+
+const buildCustomer = () =>
+  unwrap(
+    Customer.create(
+      {
+        companyId: UniqueID.generateNewID(),
+        status: CustomerStatus.createActive(),
+        reference: Maybe.some(unwrap(Name.create("C-001"))),
+        isCompany: true,
+        name: unwrap(Name.create("Acme")),
+        tradeName: Maybe.some(unwrap(Name.create("Acme Trading"))),
+        tin: Maybe.some(unwrap(TINNumber.create("B12345678"))),
+        address: {
+          street: Maybe.some(unwrap(Street.create("Main street 1"))),
+          street2: Maybe.none(),
+          city: Maybe.some(unwrap(City.create("Madrid"))),
+          province: Maybe.some(unwrap(Province.create("Madrid"))),
+          postalCode: Maybe.some(unwrap(PostalCode.create("28001"))),
+          country: Maybe.some(unwrap(Country.create("ES"))),
+        },
+        emailPrimary: Maybe.some(unwrap(EmailAddress.create("primary@example.test"))),
+        emailSecondary: Maybe.none(),
+        phonePrimary: Maybe.some(unwrap(PhoneNumber.create("+34910000000"))),
+        phoneSecondary: Maybe.none(),
+        mobilePrimary: Maybe.some(unwrap(PhoneNumber.create("+34600000000"))),
+        mobileSecondary: Maybe.none(),
+        fax: Maybe.some(unwrap(PhoneNumber.create("+34910000001"))),
+        website: Maybe.some(unwrap(URLAddress.create("https://example.test"))),
+        legalRecord: Maybe.none(),
+        paymentMethodId: Maybe.some(UniqueID.generateNewID()),
+        paymentTermId: Maybe.some(UniqueID.generateNewID()),
+        taxRegimeCode: Maybe.some("RE"),
+        usesEquivalenceSurcharge: true,
+        usesRetention: true,
+        languageCode: unwrap(LanguageCode.create("es")),
+        currencyCode: unwrap(CurrencyCode.create("EUR")),
+      },
+      UniqueID.generateNewID()
+    )
+  );
+
+test("proyecta Customer a un estado histórico portable completo sin legalRecord", () => {
+  const customer = buildCustomer();
+
+  assert.deepEqual(toCustomerAuditState(customer), {
+    status: "active",
+    reference: "C-001",
+    isCompany: true,
+    name: "Acme",
+    tradeName: "Acme Trading",
+    tin: "B12345678",
+    address: {
+      street: "Main street 1",
+      street2: null,
+      city: "Madrid",
+      province: "Madrid",
+      postalCode: "28001",
+      country: "ES",
+    },
+    emailPrimary: "primary@example.test",
+    emailSecondary: null,
+    phonePrimary: "+34910000000",
+    phoneSecondary: null,
+    mobilePrimary: "+34600000000",
+    mobileSecondary: null,
+    fax: "+34910000001",
+    website: "https://example.test",
+    paymentMethodId: customer.paymentMethodId.unwrap().toPrimitive(),
+    paymentTermId: customer.paymentTermId.unwrap().toPrimitive(),
+    taxRegimeCode: "RE",
+    usesEquivalenceSurcharge: true,
+    usesRetention: true,
+    languageCode: "es",
+    currencyCode: "EUR",
+  });
+  assert.equal("legalRecord" in toCustomerAuditState(customer), false);
+  assert.deepEqual(toCustomerAuditTarget(customer), {
+    type: "customer",
+    id: customer.id.toPrimitive(),
+    label: "Acme",
+  });
+});
diff --git a/modules/customers/src/api/application/audit/customer-audit.ts b/modules/customers/src/api/application/audit/customer-audit.ts
new file mode 100644
index 00000000..1e81a134
--- /dev/null
+++ b/modules/customers/src/api/application/audit/customer-audit.ts
@@ -0,0 +1,94 @@
+import type { AuditMutationTarget, AuditState } from "@repo/rdx-audit";
+
+import type { Customer } from "../../domain";
+
+export const CUSTOMER_AUDIT_ACTIONS = {
+  CREATED: "customer.created",
+  UPDATED: "customer.updated",
+} as const;
+
+type CustomerAuditState = Readonly<{
+  status: "active" | "inactive";
+  reference: string | null;
+  isCompany: boolean;
+  name: string;
+  tradeName: string | null;
+  tin: string | null;
+  address: Readonly<{
+    street: string | null;
+    street2: string | null;
+    city: string | null;
+    province: string | null;
+    postalCode: string | null;
+    country: string | null;
+  }>;
+  emailPrimary: string | null;
+  emailSecondary: string | null;
+  phonePrimary: string | null;
+  phoneSecondary: string | null;
+  mobilePrimary: string | null;
+  mobileSecondary: string | null;
+  fax: string | null;
+  website: string | null;
+  paymentMethodId: string | null;
+  paymentTermId: string | null;
+  taxRegimeCode: string | null;
+  usesEquivalenceSurcharge: boolean;
+  usesRetention: boolean;
+  languageCode: string;
+  currencyCode: string;
+}>;
+
+const toNullablePrimitive = <T extends { toPrimitive(): string }>(value: {
+  match: <R>(some: (item: T) => R, none: () => R) => R;
+}): string | null =>
+  value.match(
+    (item) => item.toPrimitive(),
+    () => null
+  );
+
+/** Proyección histórica explícita; `legalRecord` se excluye deliberadamente en v1. */
+export const toCustomerAuditState = (customer: Customer): CustomerAuditState => {
+  const status: CustomerAuditState["status"] = customer.isActive ? "active" : "inactive";
+
+  return {
+    status,
+    reference: toNullablePrimitive(customer.reference),
+    isCompany: customer.isCompany,
+    name: customer.name.toPrimitive(),
+    tradeName: toNullablePrimitive(customer.tradeName),
+    tin: toNullablePrimitive(customer.tin),
+    address: {
+      street: toNullablePrimitive(customer.address.getProps().street),
+      street2: toNullablePrimitive(customer.address.getProps().street2),
+      city: toNullablePrimitive(customer.address.getProps().city),
+      province: toNullablePrimitive(customer.address.getProps().province),
+      postalCode: toNullablePrimitive(customer.address.getProps().postalCode),
+      country: toNullablePrimitive(customer.address.getProps().country),
+    },
+    emailPrimary: toNullablePrimitive(customer.emailPrimary),
+    emailSecondary: toNullablePrimitive(customer.emailSecondary),
+    phonePrimary: toNullablePrimitive(customer.phonePrimary),
+    phoneSecondary: toNullablePrimitive(customer.phoneSecondary),
+    mobilePrimary: toNullablePrimitive(customer.mobilePrimary),
+    mobileSecondary: toNullablePrimitive(customer.mobileSecondary),
+    fax: toNullablePrimitive(customer.fax),
+    website: toNullablePrimitive(customer.website),
+    paymentMethodId: toNullablePrimitive(customer.paymentMethodId),
+    paymentTermId: toNullablePrimitive(customer.paymentTermId),
+    taxRegimeCode: customer.taxRegimeCode.match(
+      (code) => code,
+      () => null
+    ),
+    usesEquivalenceSurcharge: customer.usesEquivalenceSurcharge,
+    usesRetention: customer.usesRetention,
+    languageCode: customer.languageCode.toPrimitive(),
+    currencyCode: customer.currencyCode.toPrimitive(),
+  } satisfies AuditState;
+};
+
+export const toCustomerAuditTarget = (customer: Customer): AuditMutationTarget => ({
+  type: "customer",
+  id: customer.id.toPrimitive(),
+  label: customer.name.toPrimitive(),
+});
diff --git a/modules/customers/src/api/application/di/customer-creator.di.ts b/modules/customers/src/api/application/di/customer-creator.di.ts
index 0fca6ae1..580ed5c5 100644
--- a/modules/customers/src/api/application/di/customer-creator.di.ts
+++ b/modules/customers/src/api/application/di/customer-creator.di.ts
@@ -1,12 +1,16 @@
+import type { IAudit } from "@repo/rdx-audit";
+
 import type { ICustomerRepository } from "../repositories";
 import { CustomerCreator, type ICustomerCreator } from "../services";
 
 export const buildCustomerCreator = (params: {
   repository: ICustomerRepository;
+  audit: IAudit;
 }): ICustomerCreator => {
-  const { repository } = params;
+  const { repository, audit } = params;
 
   return new CustomerCreator({
     repository,
+    audit,
   });
 };
diff --git a/modules/customers/src/api/application/di/customer-updater.di.ts b/modules/customers/src/api/application/di/customer-updater.di.ts
index d40ff454..b45f7264 100644
--- a/modules/customers/src/api/application/di/customer-updater.di.ts
+++ b/modules/customers/src/api/application/di/customer-updater.di.ts
@@ -1,12 +1,16 @@
+import type { IAudit } from "@repo/rdx-audit";
+
 import type { ICustomerRepository } from "../repositories";
 import { CustomerUpdater, type ICustomerUpdater } from "../services";
 
 export const buildCustomerUpdater = (params: {
   repository: ICustomerRepository;
+  audit: IAudit;
 }): ICustomerUpdater => {
-  const { repository } = params;
+  const { repository, audit } = params;
 
   return new CustomerUpdater({
     repository,
+    audit,
   });
 };
diff --git a/modules/customers/src/api/application/services/customer-creator.ts b/modules/customers/src/api/application/services/customer-creator.ts
index f1ced91b..cf932e24 100644
--- a/modules/customers/src/api/application/services/customer-creator.ts
+++ b/modules/customers/src/api/application/services/customer-creator.ts
@@ -1,8 +1,14 @@
 import { DuplicateEntityError } from "@erp/core/api";
+import type { IAudit } from "@repo/rdx-audit";
 import type { UniqueID } from "@repo/rdx-ddd";
 import { Result } from "@repo/rdx-utils";
 
 import { Customer, type ICustomerCreateProps } from "../../domain";
+import {
+  CUSTOMER_AUDIT_ACTIONS,
+  toCustomerAuditState,
+  toCustomerAuditTarget,
+} from "../audit/customer-audit";
 import type { ICustomerRepository } from "../repositories";
 import { CustomerNotExistsInCompanySpecification } from "../specs";
 
@@ -17,13 +23,16 @@ export interface ICustomerCreator {
 
 type CustomerCreatorDeps = {
   repository: ICustomerRepository;
+  audit: IAudit;
 };
 
 export class CustomerCreator implements ICustomerCreator {
   private readonly repository: ICustomerRepository;
+  private readonly audit: IAudit;
 
   constructor(deps: CustomerCreatorDeps) {
     this.repository = deps.repository;
+    this.audit = deps.audit;
   }
 
   async create(params: {
@@ -69,6 +78,16 @@ export class CustomerCreator implements ICustomerCreator {
       return Result.fail(saveResult.error);
     }
 
+    const auditResult = await this.audit.recordMutation({
+      action: CUSTOMER_AUDIT_ACTIONS.CREATED,
+      target: toCustomerAuditTarget(newCustomer),
+      before: {},
+      after: toCustomerAuditState(newCustomer),
+    });
+    if (auditResult.isFailure) {
+      return Result.fail(auditResult.error);
+    }
+
     return Result.ok(newCustomer);
   }
 }
diff --git a/modules/customers/src/api/application/services/customer-updater.ts b/modules/customers/src/api/application/services/customer-updater.ts
index 42f34a31..bef75aa5 100644
--- a/modules/customers/src/api/application/services/customer-updater.ts
+++ b/modules/customers/src/api/application/services/customer-updater.ts
@@ -1,7 +1,13 @@
+import type { IAudit } from "@repo/rdx-audit";
 import type { UniqueID } from "@repo/rdx-ddd";
 import { Result } from "@repo/rdx-utils";
 
 import type { Customer, CustomerPatchProps } from "../../domain";
+import {
+  CUSTOMER_AUDIT_ACTIONS,
+  toCustomerAuditState,
+  toCustomerAuditTarget,
+} from "../audit/customer-audit";
 import type { ICustomerRepository } from "../repositories";
 
 export interface ICustomerUpdater {
@@ -15,13 +21,16 @@ export interface ICustomerUpdater {
 
 type CustomerUpdaterDeps = {
   repository: ICustomerRepository;
+  audit: IAudit;
 };
 
 export class CustomerUpdater implements ICustomerUpdater {
   private readonly repository: ICustomerRepository;
+  private readonly audit: IAudit;
 
   constructor(deps: CustomerUpdaterDeps) {
     this.repository = deps.repository;
+    this.audit = deps.audit;
   }
 
   async update(params: {
@@ -40,6 +49,7 @@ export class CustomerUpdater implements ICustomerUpdater {
     }
 
     const customer = existingResult.data;
+    const before = toCustomerAuditState(customer);
 
     // Aplicar cambios en el agregado
     const updateResult = customer.update(props);
@@ -48,6 +58,20 @@ export class CustomerUpdater implements ICustomerUpdater {
       return Result.fail(updateResult.error);
     }
 
+    if (Object.keys(props).length === 0) {
+      const auditResult = await this.audit.recordMutation({
+        action: CUSTOMER_AUDIT_ACTIONS.UPDATED,
+        target: toCustomerAuditTarget(customer),
+        before,
+        after: toCustomerAuditState(customer),
+      });
+      if (auditResult.isFailure) {
+        return Result.fail(auditResult.error);
+      }
+
+      return Result.ok(customer);
+    }
+
     // Persistir cambios
     const saveResult = await this.repository.update(customer, transaction);
 
@@ -55,6 +79,16 @@ export class CustomerUpdater implements ICustomerUpdater {
       return Result.fail(saveResult.error);
     }
 
+    const auditResult = await this.audit.recordMutation({
+      action: CUSTOMER_AUDIT_ACTIONS.UPDATED,
+      target: toCustomerAuditTarget(customer),
+      before,
+      after: toCustomerAuditState(customer),
+    });
+    if (auditResult.isFailure) {
+      return Result.fail(auditResult.error);
+    }
+
     return Result.ok(customer);
   }
 }
diff --git a/modules/customers/src/api/infrastructure/di/customer-public-services.ts b/modules/customers/src/api/infrastructure/di/customer-public-services.ts
index 9e3e10aa..26966f74 100644
--- a/modules/customers/src/api/infrastructure/di/customer-public-services.ts
+++ b/modules/customers/src/api/infrastructure/di/customer-public-services.ts
@@ -1,4 +1,4 @@
-import type { SetupParams } from "@erp/core/api";
+import type { ModuleParams } from "@erp/core/api";
 import type { TINNumber, UniqueID } from "@repo/rdx-ddd";
 import { Result } from "@repo/rdx-utils";
 
@@ -16,18 +16,18 @@ import { buildCustomerRepository } from "./customer-repositories.di";
 import type { CustomersInternalDeps } from "./customers.di";
 
 export function buildCustomerPublicServices(
-  params: SetupParams,
-  deps: CustomersInternalDeps
+  params: ModuleParams,
+  _deps: CustomersInternalDeps
 ): ICustomerPublicServices {
   const { database } = params;
-  const catalogs = resolveCustomerCatalogsDeps(params);
+  const _catalogs = resolveCustomerCatalogsDeps(params);
 
   // Infrastructure
   const persistenceMappers = buildCustomerPersistenceMappers();
   const repository = buildCustomerRepository({ database, mappers: persistenceMappers });
 
   const finder = buildCustomerFinder({ repository });
-  const creator = buildCustomerCreator({ repository });
+  const creator = buildCustomerCreator({ repository, audit: params.audit });
 
   return {
     findCustomerByTIN: async (tin: TINNumber, context: ICustomerServicesContext) => {
@@ -53,7 +53,7 @@ export function buildCustomerPublicServices(
 
       return Result.ok(customerResult.data);
     },
-    
+
     createCustomer: async (
       id: UniqueID,
       props: ICustomerCreateProps,
diff --git a/modules/customers/src/api/infrastructure/di/customers.di.ts b/modules/customers/src/api/infrastructure/di/customers.di.ts
index a70c2ef7..37506222 100644
--- a/modules/customers/src/api/infrastructure/di/customers.di.ts
+++ b/modules/customers/src/api/infrastructure/di/customers.di.ts
@@ -69,8 +69,8 @@ export function buildCustomersDependencies(params: ModuleParams): CustomersInter
   });
 
   const finder = buildCustomerFinder({ repository });
-  const creator = buildCustomerCreator({ repository });
-  const updater = buildCustomerUpdater({ repository });
+  const creator = buildCustomerCreator({ repository, audit: params.audit });
+  const updater = buildCustomerUpdater({ repository, audit: params.audit });
   const defaultPaymentTermResolver = new CustomerDefaultPaymentTermResolver({
     companyFinder: companies.company.finder,
     paymentResolver: catalogResolvers.paymentResolver,
diff --git a/modules/customers/src/api/infrastructure/persistence/sequelize/repositories/customer.repository.ts b/modules/customers/src/api/infrastructure/persistence/sequelize/repositories/customer.repository.ts
index 7f346b5a..d8461e6a 100644
--- a/modules/customers/src/api/infrastructure/persistence/sequelize/repositories/customer.repository.ts
+++ b/modules/customers/src/api/infrastructure/persistence/sequelize/repositories/customer.repository.ts
@@ -1,9 +1,4 @@
-import {
-  EntityNotFoundError,
-  InfrastructureRepositoryError,
-  SequelizeRepository,
-  translateSequelizeError,
-} from "@erp/core/api";
+import { EntityNotFoundError, SequelizeRepository, translateSequelizeError } from "@erp/core/api";
 import { type Criteria, CriteriaToSequelizeConverter } from "@repo/rdx-criteria/server";
 import type { TINNumber, UniqueID } from "@repo/rdx-ddd";
 import { type Collection, Result } from "@repo/rdx-utils";
@@ -68,18 +63,14 @@ export class CustomerRepository
 
       const { id, ...updatePayload } = dtoResult.data;
 
-      const [affected] = await CustomerModel.update(updatePayload, {
+      await CustomerModel.update(updatePayload, {
         where: { id /*, version */ },
         transaction,
         //individualHooks: true,
       });
 
-      if (affected === 0) {
-        return Result.fail(
-          new InfrastructureRepositoryError("Concurrency conflict or not found update customer")
-        );
-      }
-
+      // CustomerUpdater ya comprobó existencia y scope antes de persistir.
+      // MariaDB devuelve 0 cuando el estado recibido es idéntico al almacenado.
       return Result.ok();
     } catch (err: unknown) {
       return Result.fail(translateSequelizeError(err));
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 028105ff..401ca420 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -831,6 +831,9 @@ importers:
       '@repo/i18next':
         specifier: workspace:*
         version: link:../../packages/i18n
+      '@repo/rdx-audit':
+        specifier: workspace:*
+        version: link:../../packages/rdx-audit
       '@repo/rdx-criteria':
         specifier: workspace:*
         version: link:../../packages/rdx-criteria