diff --git a/app/Http/Requests/Credit/StoreCreditRequest.php b/app/Http/Requests/Credit/StoreCreditRequest.php
index df8afc4a8799..534a7bc77eba 100644
--- a/app/Http/Requests/Credit/StoreCreditRequest.php
+++ b/app/Http/Requests/Credit/StoreCreditRequest.php
@@ -67,7 +67,7 @@ class StoreCreditRequest extends Request
 
         // $rules['number'] = new UniqueCreditNumberRule($this->all());
         $rules['number'] = ['nullable', Rule::unique('credits')->where('company_id', $user->company()->id)];
-        $rules['discount'] = 'sometimes|numeric';
+        $rules['discount'] = 'sometimes|numeric|max:99999999999999';
         $rules['is_amount_discount'] = ['boolean'];
         $rules['tax_rate1'] = 'bail|sometimes|numeric';
         $rules['tax_rate2'] = 'bail|sometimes|numeric';
diff --git a/app/Http/Requests/Credit/UpdateCreditRequest.php b/app/Http/Requests/Credit/UpdateCreditRequest.php
index e069624d29f7..bfbd1f268d5b 100644
--- a/app/Http/Requests/Credit/UpdateCreditRequest.php
+++ b/app/Http/Requests/Credit/UpdateCreditRequest.php
@@ -67,7 +67,8 @@ class UpdateCreditRequest extends Request
         $rules['client_id'] = ['bail', 'sometimes',Rule::in([$this->credit->client_id])];
 
         $rules['line_items'] = 'array';
-        $rules['discount'] = 'sometimes|numeric';
+
+$rules['discount'] = 'sometimes|numeric|max:99999999999999';
         $rules['is_amount_discount'] = ['boolean'];
         $rules['tax_rate1'] = 'bail|sometimes|numeric';
         $rules['tax_rate2'] = 'bail|sometimes|numeric';
diff --git a/app/Http/Requests/Invoice/StoreInvoiceRequest.php b/app/Http/Requests/Invoice/StoreInvoiceRequest.php
index 94f47c68a067..f7bcb565d88d 100644
--- a/app/Http/Requests/Invoice/StoreInvoiceRequest.php
+++ b/app/Http/Requests/Invoice/StoreInvoiceRequest.php
@@ -67,7 +67,7 @@ class StoreInvoiceRequest extends Request
         $rules['is_amount_discount'] = ['boolean'];
 
         $rules['line_items'] = 'array';
-        $rules['discount'] = 'sometimes|numeric';
+        $rules['discount'] = 'sometimes|numeric|max:99999999999999';
         $rules['tax_rate1'] = 'bail|sometimes|numeric';
         $rules['tax_rate2'] = 'bail|sometimes|numeric';
         $rules['tax_rate3'] = 'bail|sometimes|numeric';
diff --git a/app/Http/Requests/Invoice/UpdateInvoiceRequest.php b/app/Http/Requests/Invoice/UpdateInvoiceRequest.php
index dc79843df353..c06605cf611b 100644
--- a/app/Http/Requests/Invoice/UpdateInvoiceRequest.php
+++ b/app/Http/Requests/Invoice/UpdateInvoiceRequest.php
@@ -66,7 +66,8 @@ class UpdateInvoiceRequest extends Request
         $rules['is_amount_discount'] = ['boolean'];
         $rules['client_id'] = ['bail', 'sometimes', Rule::in([$this->invoice->client_id])];
         $rules['line_items'] = 'array';
-        $rules['discount'] = 'sometimes|numeric';
+
+$rules['discount'] = 'sometimes|numeric|max:99999999999999';
         $rules['project_id'] = ['bail', 'sometimes', new ValidProjectForClient($this->all())];
         $rules['tax_rate1'] = 'bail|sometimes|numeric';
         $rules['tax_rate2'] = 'bail|sometimes|numeric';
diff --git a/app/Http/Requests/PurchaseOrder/StorePurchaseOrderRequest.php b/app/Http/Requests/PurchaseOrder/StorePurchaseOrderRequest.php
index aca3320712ef..50ff98993f7a 100644
--- a/app/Http/Requests/PurchaseOrder/StorePurchaseOrderRequest.php
+++ b/app/Http/Requests/PurchaseOrder/StorePurchaseOrderRequest.php
@@ -49,7 +49,8 @@ class StorePurchaseOrderRequest extends Request
         $rules['vendor_id'] = 'bail|required|exists:vendors,id,company_id,'.$user->company()->id.',is_deleted,0';
 
         $rules['number'] = ['nullable', Rule::unique('purchase_orders')->where('company_id', $user->company()->id)];
-        $rules['discount']  = 'sometimes|numeric';
+
+$rules['discount'] = 'sometimes|numeric|max:99999999999999';
         $rules['is_amount_discount'] = ['boolean'];
         $rules['line_items'] = 'array';
 
diff --git a/app/Http/Requests/PurchaseOrder/UpdatePurchaseOrderRequest.php b/app/Http/Requests/PurchaseOrder/UpdatePurchaseOrderRequest.php
index cdee35d9a6a8..c0ab87926983 100644
--- a/app/Http/Requests/PurchaseOrder/UpdatePurchaseOrderRequest.php
+++ b/app/Http/Requests/PurchaseOrder/UpdatePurchaseOrderRequest.php
@@ -52,7 +52,8 @@ class UpdatePurchaseOrderRequest extends Request
         $rules['vendor_id'] = ['bail', 'sometimes', Rule::in([$this->purchase_order->vendor_id])];
 
         $rules['line_items'] = 'array';
-        $rules['discount'] = 'sometimes|numeric';
+
+$rules['discount'] = 'sometimes|numeric|max:99999999999999';
         $rules['is_amount_discount'] = ['boolean'];
 
         if ($this->file('documents') && is_array($this->file('documents'))) {
diff --git a/app/Http/Requests/Quote/StoreQuoteRequest.php b/app/Http/Requests/Quote/StoreQuoteRequest.php
index c335351ae247..221ea3815308 100644
--- a/app/Http/Requests/Quote/StoreQuoteRequest.php
+++ b/app/Http/Requests/Quote/StoreQuoteRequest.php
@@ -60,7 +60,8 @@ class StoreQuoteRequest extends Request
         }
 
         $rules['number'] = ['nullable', Rule::unique('quotes')->where('company_id', $user->company()->id)];
-        $rules['discount'] = 'sometimes|numeric';
+
+$rules['discount'] = 'sometimes|numeric|max:99999999999999';
         $rules['is_amount_discount'] = ['boolean'];
         $rules['exchange_rate'] = 'bail|sometimes|numeric';
         $rules['line_items'] = 'array';
diff --git a/app/Http/Requests/Quote/UpdateQuoteRequest.php b/app/Http/Requests/Quote/UpdateQuoteRequest.php
index 7fd459c30161..d1e3fe9967d8 100644
--- a/app/Http/Requests/Quote/UpdateQuoteRequest.php
+++ b/app/Http/Requests/Quote/UpdateQuoteRequest.php
@@ -59,7 +59,7 @@ class UpdateQuoteRequest extends Request
         $rules['number'] = ['bail', 'sometimes', 'nullable', Rule::unique('quotes')->where('company_id', $user->company()->id)->ignore($this->quote->id)];
         $rules['client_id'] = ['bail', 'sometimes', Rule::in([$this->quote->client_id])];
         $rules['line_items'] = 'array';
-        $rules['discount'] = 'sometimes|numeric';
+        $rules['discount'] = 'sometimes|numeric|max:99999999999999';
         $rules['is_amount_discount'] = ['boolean'];
         $rules['exchange_rate'] = 'bail|sometimes|numeric';