diff --git a/app/Http/Requests/Payment/StorePaymentRequest.php b/app/Http/Requests/Payment/StorePaymentRequest.php
index ce529aa6f9f5..9194aff53356 100644
--- a/app/Http/Requests/Payment/StorePaymentRequest.php
+++ b/app/Http/Requests/Payment/StorePaymentRequest.php
@@ -104,7 +104,8 @@ class StorePaymentRequest extends Request
             'credits.*.credit_id' => new ValidCreditsRules($this->all()),
             'credits.*.amount' => 'required',
             'invoices' => new ValidPayableInvoicesRule(),
-            'number' => 'nullable',
+            'number' => 'nullable|unique:payments,number,' . $this->id . ',id,company_id,' . $this->company_id,
+            //'number' => 'nullable',
         ];
 
 
diff --git a/app/Http/Requests/Payment/UpdatePaymentRequest.php b/app/Http/Requests/Payment/UpdatePaymentRequest.php
index 6149d3d142a8..a9e458011524 100644
--- a/app/Http/Requests/Payment/UpdatePaymentRequest.php
+++ b/app/Http/Requests/Payment/UpdatePaymentRequest.php
@@ -40,6 +40,7 @@ class UpdatePaymentRequest extends Request
             'invoices' => ['array',new PaymentAppliedValidAmount,new ValidCreditsPresentRule],
             'invoices.*.invoice_id' => 'distinct',
             'documents' => 'mimes:png,ai,svg,jpeg,tiff,pdf,gif,psd,txt,doc,xls,ppt,xlsx,docx,pptx',
+            'number' = 'nullable|unique:payments,number,' . $this->id . ',id,company_id,' . $this->company_id,
         ];
 
         if ($this->input('documents') && is_array($this->input('documents'))) {