diff --git a/src/database/schemas/models.js b/src/database/schemas/models.js
index 1d7c3ed..0829ea4 100644
--- a/src/database/schemas/models.js
+++ b/src/database/schemas/models.js
@@ -38,6 +38,7 @@ import { shipmentModel } from './inventory/shipment.schema.js';
 import { invoiceModel } from './finance/invoice.schema.js';
 import { clientModel } from './sales/client.schema.js';
 import { salesOrderModel } from './sales/salesorder.schema.js';
+import { marketplaceModel } from './sales/marketplace.schema.js';
 
 // Map prefixes to models and id fields
 export const models = {
@@ -315,4 +316,11 @@ export const models = {
     label: 'Sales Order',
     referenceField: '_reference',
   },
+  MKT: {
+    model: marketplaceModel,
+    idField: '_id',
+    type: 'marketplace',
+    label: 'Marketplace',
+    referenceField: '_reference',
+  },
 };
diff --git a/src/database/schemas/sales/client.schema.js b/src/database/schemas/sales/client.schema.js
index 711ab6f..005c820 100644
--- a/src/database/schemas/sales/client.schema.js
+++ b/src/database/schemas/sales/client.schema.js
@@ -15,6 +15,7 @@ const clientSchema = new mongoose.Schema(
   {
     _reference: { type: String, default: () => generateId()() },
     name: { required: true, type: String },
+    marketplace: { type: mongoose.Schema.Types.ObjectId, ref: 'marketplace', required: false },
     email: { required: false, type: String },
     phone: { required: false, type: String },
     country: { required: false, type: String },
diff --git a/src/database/schemas/sales/marketplace.schema.js b/src/database/schemas/sales/marketplace.schema.js
new file mode 100644
index 0000000..17c9ce5
--- /dev/null
+++ b/src/database/schemas/sales/marketplace.schema.js
@@ -0,0 +1,26 @@
+import mongoose from 'mongoose';
+import { generateId } from '../../utils.js';
+
+const marketplaceSchema = new mongoose.Schema(
+  {
+    _reference: { type: String, default: () => generateId()() },
+    name: { required: true, type: String },
+    provider: {
+      type: String,
+      required: true,
+      enum: ['ebay', 'etsy', 'tiktokShop'],
+    },
+    active: { required: true, type: Boolean, default: true },
+    // Provider-specific API configuration (flexible for eBay, Etsy, TikTok Shop)
+    config: { type: mongoose.Schema.Types.Mixed, default: {} },
+  },
+  { timestamps: true }
+);
+
+marketplaceSchema.virtual('id').get(function () {
+  return this._id;
+});
+
+marketplaceSchema.set('toJSON', { virtuals: true });
+
+export const marketplaceModel = mongoose.model('marketplace', marketplaceSchema);
diff --git a/src/database/schemas/sales/salesorder.schema.js b/src/database/schemas/sales/salesorder.schema.js
index 20f18c8..6a2ade7 100644
--- a/src/database/schemas/sales/salesorder.schema.js
+++ b/src/database/schemas/sales/salesorder.schema.js
@@ -18,6 +18,7 @@ const salesOrderSchema = new Schema(
     totalTaxAmount: { type: Number, required: true, default: 0 },
     timestamp: { type: Date, default: Date.now },
     client: { type: Schema.Types.ObjectId, ref: 'client', required: true },
+    marketplace: { type: Schema.Types.ObjectId, ref: 'marketplace', required: false },
     state: {
       type: { type: String, required: true, default: 'draft' },
     },