diff --git a/lib/configurations.js b/lib/configurations.js
index 36595257..0fe512d0 100644
--- a/lib/configurations.js
+++ b/lib/configurations.js
@@ -41,10 +41,13 @@ configurationsModule.configure = function (configurations) {
     throw new Error('You must provide client_id and client_secret');
   }
 
-  if (configurations.client_id !== undefined && configurations.client_secret !== undefined
-    && (clientId !== undefined || clientSecret !== undefined)) {
-    throw new Error('Cant change client_id or client_secret because is already set');
-  }
+  // ### We commented this next validation.
+  // ### It is a customer desire to change clientSecret and clientId dynamically
+
+  // if (configurations.client_id !== undefined && configurations.client_secret !== undefined
+  //   && (clientId !== undefined || clientSecret !== undefined)) {
+  //   throw new Error('Cant change client_id or client_secret because is already set');
+  // }
 
   clientId = clientId || configurations.client_id;
   clientSecret = clientSecret || configurations.client_secret;
diff --git a/lib/models/preferencesModel.js b/lib/models/preferencesModel.js
index 228dd6d1..e152462d 100644
--- a/lib/models/preferencesModel.js
+++ b/lib/models/preferencesModel.js
@@ -125,6 +125,9 @@ module.exports = {
         }
       }
     },
+    statement_descriptor: {
+      type: 'string'
+    },
     payment_methods: {
       type: 'object',
       properties: {
diff --git a/package.json b/package.json
index 6a6a0f45..7817a208 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mercadopago",
-  "version": "1.5.1",
+  "version": "1.5.2",
   "description": "Mercadopago SDK for Node.js",
   "main": "index.js",
   "scripts": {