diff --git a/wallet/v1/msg.proto b/wallet/v1/msg.proto
index 7bcf100..d63124e 100644
--- a/wallet/v1/msg.proto
+++ b/wallet/v1/msg.proto
@@ -358,7 +358,7 @@ message SaleGetTokenReq {
   auth.v1.InternalIAM iam = 1;
   int64 asset_id = 2;
   double amount = 3;
-  optional string discount_code = 4;
+  optional uint64 discount_code = 4;
 }
 
 // represent the information regarding the ipg gateway
@@ -368,7 +368,7 @@ message SaleGetTokenRes {
   int64 total_price = 3;
   double amount = 4;
   string asset = 5;
-  optional string discount_code = 6;
+  optional uint64 discount_code = 4;
 }
 
 message SaleConfirmReq {
@@ -379,7 +379,7 @@ message SaleConfirmReq {
   string card_holder_info = 5;
   string card_holder_pan = 6;
   string final_amount = 7;
-  optional string discount_code = 8;
+  optional uint64 discount_code = 4;
 }
 
 message SaleConfirmRes {
@@ -393,7 +393,7 @@ message SaleManualReq {
   string paid_at = 4;
   string rrn = 5;
   string national_id = 6;
-  optional string discount_code = 7;
+  optional uint64 discount_code = 4;
 
 }
 
@@ -491,15 +491,17 @@ message LockAssetReq {
 }
 
 message AssetDiscountReq {
-  string code = 1;
-  int64 asset_id = 2;
-  optional double amount = 3; // calculate discount amount
+  auth.v1.InternalIAM iam = 1;
+  string code = 2;
+  int64 asset_id = 3;
+  optional double amount = 4; // calculate discount amount
 }
 
 message AssetDiscountRes {
-  string code = 1;
-  string expires_at = 2;
-  double static_amount = 3;
-  double percentage = 4;
-  optional double discount_amount = 5; // based of asset price and discount amount in req
+  uint64 id = 1;
+  string code = 2;
+  string expires_at = 3;
+  double static_amount = 4;
+  double percentage = 5;
+  optional double discount_amount = 6; // based of asset price and discount amount in req
 }