diff --git a/apps/web/src/app/features/masters/master-list.page.ts b/apps/web/src/app/features/masters/master-list.page.ts
index a1cbc67..1848e25 100644
--- a/apps/web/src/app/features/masters/master-list.page.ts
+++ b/apps/web/src/app/features/masters/master-list.page.ts
@@ -1,7 +1,9 @@
-import { ChangeDetectionStrategy, Component, inject } from '@angular/core';
+import { HttpClient, HttpParams } from '@angular/common/http';
+import { ChangeDetectionStrategy, Component, inject, signal } from '@angular/core';
 import { ActivatedRoute, Router } from '@angular/router';
+import { API_URL } from '../../core/api';
 import { ListView } from '../../shared/list/list-view';
-import type { ListRow } from '../../shared/list/list.types';
+import type { ListColumn, ListRow } from '../../shared/list/list.types';
 import type { MasterScreen } from './master-types';
 
 /** Lista de un maestro (clientes, proveedores, artículos); abre uno o crea uno nuevo. */
@@ -13,7 +15,7 @@ import type { MasterScreen } from './master-types';
     <sbo-list-view
       [title]="title"
       [resource]="screen.resource"
-      [columns]="screen.columns"
+      [columns]="columns"
       [extraFields]="screen.extraFields ?? []"
       [filters]="screen.filters"
       [orderby]="screen.orderby"
@@ -32,6 +34,32 @@ export class MasterListPage {
 
   protected readonly screen = this.route.snapshot.data['screen'] as MasterScreen;
   protected readonly title = this.route.snapshot.data['title'] as string;
+  private readonly http = inject(HttpClient);
+  private readonly names = signal<Record<string, Map<string, string>>>({});
+
+  /** Las columnas de la pantalla; las de un catálogo muestran `código · nombre` apenas llega el catálogo (una sola consulta). */
+  protected readonly columns: readonly ListColumn[] = this.screen.columns.map((c) => {
+    if (!this.screen.listNames?.some((n) => n.key === c.key)) return c;
+    return {
+      ...c,
+      format: (r: ListRow) => {
+        const code = r[c.key];
+        if (code === null || code === undefined || code === '') return '';
+        const name = this.names()[c.key]?.get(String(code));
+        return name ? `${code} · ${name}` : String(code);
+      },
+    };
+  });
+
+  constructor() {
+    for (const n of this.screen.listNames ?? []) {
+      const params = new HttpParams().set('$select', `${n.valueField},${n.labelField}`).set('$top', 500);
+      this.http.get<{ value?: Record<string, unknown>[] }>(`${API_URL}/sl/${n.resource}`, { params }).subscribe({
+        next: (res) => this.names.update((m) => ({ ...m, [n.key]: new Map((res.value ?? []).map((x) => [String(x[n.valueField]), String(x[n.labelField] ?? '')])) })),
+        error: () => undefined, // sin nombres se ve el código
+      });
+    }
+  }
 
   protected open(row: ListRow): void {
     void this.router.navigate([String(row[this.screen.keyField])], { relativeTo: this.route });
diff --git a/apps/web/src/app/features/masters/master-types.ts b/apps/web/src/app/features/masters/master-types.ts
index 093cecf..43c7a6f 100644
--- a/apps/web/src/app/features/masters/master-types.ts
+++ b/apps/web/src/app/features/masters/master-types.ts
@@ -71,6 +71,8 @@ export interface MasterScreen {
   createLabel: string;
   columns: readonly ListColumn[];
   extraFields?: readonly string[];
+  /** Columnas de la lista cuyo valor es un código de otro catálogo: se muestra `código · nombre` (`GroupCode` → `BusinessPartnerGroups`). */
+  listNames?: readonly { key: string; resource: string; valueField: string; labelField: string }[];
   filters: readonly ListFilter[];
   orderby: string;
   /** Filtro fijo de la lista y de la navegación (ej. solo los clientes). */
diff --git a/apps/web/src/app/features/masters/socios-negocio/socios.screens.ts b/apps/web/src/app/features/masters/socios-negocio/socios.screens.ts
index c194807..ccaba8a 100644
--- a/apps/web/src/app/features/masters/socios-negocio/socios.screens.ts
+++ b/apps/web/src/app/features/masters/socios-negocio/socios.screens.ts
@@ -40,10 +40,12 @@ const partner = (opts: { path: string; type: 'cCustomer' | 'cSupplier'; singular
     orderby: 'CardCode',
     baseFilter: `CardType eq '${opts.type}'`,
     extraFields: ['Frozen'],
+    listNames: [{ key: 'GroupCode', resource: 'BusinessPartnerGroups', valueField: 'Code', labelField: 'Name' }],
     columns: [
       { key: 'CardCode', title: 'Código', width: '130px', mono: true, searchable: true },
       { key: 'CardName', title: 'Nombre', searchable: true },
       { key: 'FederalTaxID', title: 'RUT', width: '120px', mono: true, searchable: true },
+      { key: 'GroupCode', title: 'Grupo', type: 'number', align: 'left', width: '170px' },
       { key: 'Phone1', title: 'Teléfono', width: '130px', searchable: true },
       { key: 'EmailAddress', title: 'Correo electrónico', searchable: true },
       statusColumn,