diff --git a/apps/api/.env.example b/apps/api/.env.example
index 005ee16..832b524 100644
--- a/apps/api/.env.example
+++ b/apps/api/.env.example
@@ -22,8 +22,6 @@ SAPB1_SL_TIMEOUT_MS=15000
 # Peticiones simultáneas hacia el Service Layer (el resto se encola). En el servidor
 # de prueba, 1 era lo óptimo (~20 req/s); con 2 o más se degradaba. Medir en cada cliente.
 SAPB1_SL_MAX_CONCURRENCY=1
-# true = modo solo lectura: el proxy rechaza toda escritura (crear, modificar, acciones). Para una base donde no se debe guardar nada.
-SAPB1_SL_READ_ONLY=false
 
 # Confianza TLS (elegir según el caso):
 #  1) Certificado válido de una CA pública -> dejar vacío.
diff --git a/apps/api/src/config/env.schema.ts b/apps/api/src/config/env.schema.ts
index b6713d9..50b44bd 100644
--- a/apps/api/src/config/env.schema.ts
+++ b/apps/api/src/config/env.schema.ts
@@ -50,12 +50,6 @@ export const envSchema = z
     // CA adicional de confianza (PEM): certificado autofirmado del Service
     // Layer o CA de un firewall que inspecciona SSL. Opcional.
     SAPB1_SL_CA_FILE: z.preprocess(emptyToUndefined, z.string().optional()),
-    // Modo solo lectura: el proxy rechaza toda creación, modificación y acción (las consultas siguen). Para una base
-    // donde no se debe guardar nada (la de un cliente en revisión).
-    SAPB1_SL_READ_ONLY: z
-      .enum(['true', 'false'])
-      .default('false')
-      .transform((v) => v === 'true'),
     SAPB1_SL_VERIFY_SSL: z
       .enum(['true', 'false'])
       .default('true')
diff --git a/apps/api/src/sl/sl-proxy.service.spec.ts b/apps/api/src/sl/sl-proxy.service.spec.ts
index b0f8e84..cb1798c 100644
--- a/apps/api/src/sl/sl-proxy.service.spec.ts
+++ b/apps/api/src/sl/sl-proxy.service.spec.ts
@@ -1,7 +1,6 @@
 import { ForbiddenException } from '@nestjs/common';
 import { vi } from 'vitest';
 import type { AuditService } from '../audit/audit.service.js';
-import type { AppConfigService } from '../config/app-config.service.js';
 import type { AuthUser } from '../auth/auth.types.js';
 import type { PermissionsService } from '../permissions/permissions.service.js';
 import type { SapClientService } from '../sap/sap-client.service.js';
@@ -115,39 +114,3 @@ describe('SlProxyService: auditoría', () => {
     });
   });
 });
-
-describe('SlProxyService: modo solo lectura', () => {
-  const make = (readOnly: boolean) => {
-    const request = vi.fn(async () => ({ data: { value: [] } }));
-    const record = vi.fn(async () => undefined);
-    const service = new SlProxyService(
-      { request } as unknown as SapClientService,
-      { getPaths: async () => ['*'] } as unknown as PermissionsService,
-      { record } as unknown as AuditService,
-      { get: (k: string) => (k === 'SAPB1_SL_READ_ONLY' ? readOnly : undefined) } as unknown as AppConfigService,
-    );
-    return { service, request, record };
-  };
-
-  it('rechaza crear, modificar y las acciones sin llegar a SAP, y lo audita', async () => {
-    const { service, request, record } = make(true);
-    await expect(service.create(user, 'Orders', { CardCode: 'C1' }, {}, '10.0.0.5')).rejects.toThrow('solo lectura');
-    await expect(service.update(user, 'Orders', '1', { Comments: 'x' }, {}, '10.0.0.5')).rejects.toThrow('solo lectura');
-    await expect(service.action(user, 'IncomingPayments', '1', 'Cancel', '10.0.0.5')).rejects.toThrow('solo lectura');
-    expect(request).not.toHaveBeenCalled();
-    expect(record).toHaveBeenCalledWith(expect.objectContaining({ action: 'sl_denied', outcome: 'denied' }));
-  });
-
-  it('las consultas y las acciones de solo consulta (series) siguen funcionando', async () => {
-    const { service, request } = make(true);
-    await service.list(user, 'Orders', {}, {});
-    await service.create(user, 'SeriesService_GetDocumentSeries', { DocumentTypeParams: { Document: '30' } }, {}, '10.0.0.5');
-    expect(request).toHaveBeenCalledTimes(2);
-  });
-
-  it('sin el modo solo lectura todo sigue igual', async () => {
-    const { service, request } = make(false);
-    await service.create(user, 'Orders', { CardCode: 'C1' }, {}, '10.0.0.5');
-    expect(request).toHaveBeenCalledTimes(1);
-  });
-});
diff --git a/apps/api/src/sl/sl-proxy.service.ts b/apps/api/src/sl/sl-proxy.service.ts
index e2771d6..d9fedda 100644
--- a/apps/api/src/sl/sl-proxy.service.ts
+++ b/apps/api/src/sl/sl-proxy.service.ts
@@ -8,7 +8,6 @@ import {
 import { isPathAllowed } from '@basic-erp/sap-types';
 import { AuditService, keyOfCreated, summarizeBody } from '../audit/audit.service.js';
 import type { AuthUser } from '../auth/auth.types.js';
-import { AppConfigService } from '../config/app-config.service.js';
 import { PermissionsService } from '../permissions/permissions.service.js';
 import { SapClientService } from '../sap/sap-client.service.js';
 import {
@@ -37,7 +36,6 @@ export class SlProxyService {
     private readonly sap: SapClientService,
     private readonly permissions: PermissionsService,
     private readonly audit: AuditService,
-    private readonly config?: AppConfigService,
   ) {}
 
   async list(user: AuthUser, name: string, query: ListQuery, headers: Headers) {
@@ -118,12 +116,6 @@ export class SlProxyService {
     if (!resource.methods.includes(method)) {
       throw new MethodNotAllowedException(`${method} no está permitido para ${resource.name}`);
     }
-    // Una escritura real (no una acción de solo consulta, `write: null`) no pasa si la base está en solo lectura.
-    if (method !== 'GET' && resource.write !== null && this.config?.get('SAPB1_SL_READ_ONLY')) {
-      this.logger.warn(`${user.webUser}: ${method} ${resource.name} rechazado (modo solo lectura)`);
-      await this.audit.record({ action: 'sl_denied', webUser: user.webUser, ip, resource: resource.name, outcome: 'denied', detail: { method, reason: 'read_only' } });
-      throw new ForbiddenException('La base está en modo solo lectura: no se puede guardar.');
-    }
     const required = method === 'GET' ? resource.read : resource.write;
     if (required !== null) {
       const patterns = await this.permissions.getPaths(user.webUser);