diff --git a/erpnext/accounts/doctype/payment_request/payment_request.json b/erpnext/accounts/doctype/payment_request/payment_request.json
index 1e2879e2d269..7674712374c8 100644
--- a/erpnext/accounts/doctype/payment_request/payment_request.json
+++ b/erpnext/accounts/doctype/payment_request/payment_request.json
@@ -145,6 +145,7 @@
    "fieldname": "grand_total",
    "fieldtype": "Currency",
    "label": "Amount",
+   "non_negative": 1,
    "options": "currency"
   },
   {
@@ -405,7 +406,7 @@
  "index_web_pages_for_search": 1,
  "is_submittable": 1,
  "links": [],
- "modified": "2024-03-27 13:10:11.120742",
+ "modified": "2024-06-20 13:54:55.245774",
  "modified_by": "Administrator",
  "module": "Accounts",
  "name": "Payment Request",
@@ -443,4 +444,4 @@
  "sort_field": "creation",
  "sort_order": "DESC",
  "states": []
-}
\ No newline at end of file
+}