diff --git a/eRede/eRede/Service/CancelTransactionService.cs b/eRede/eRede/Service/CancelTransactionService.cs
index 7646129..9caa910 100644
--- a/eRede/eRede/Service/CancelTransactionService.cs
+++ b/eRede/eRede/Service/CancelTransactionService.cs
@@ -4,6 +4,7 @@ internal class CancelTransactionService : AbstractTransactionService
     {
         public CancelTransactionService(Store store, Transaction transaction) : base(store, transaction)
         {
+            this.tid = transaction?.tid; 
         }
 
         protected override string getUri()
@@ -11,4 +12,4 @@ protected override string getUri()
             return base.getUri() + "/" + tid + "/refunds";
         }
     }
-}
\ No newline at end of file
+}
diff --git a/eRede/eRede/Service/CaptureTransactionService.cs b/eRede/eRede/Service/CaptureTransactionService.cs
index 0a018c4..d6c85c1 100644
--- a/eRede/eRede/Service/CaptureTransactionService.cs
+++ b/eRede/eRede/Service/CaptureTransactionService.cs
@@ -6,6 +6,7 @@ internal class CaptureTransactionService : AbstractTransactionService
     {
         public CaptureTransactionService(Store store, Transaction transaction) : base(store, transaction)
         {
+            this.tid = transaction?.tid;
         }
 
         public TransactionResponse Execute()
@@ -13,4 +14,4 @@ public TransactionResponse Execute()
             return base.Execute(Method.PUT);
         }
     }
-}
\ No newline at end of file
+}