diff --git a/erpnext/manufacturing/doctype/job_card/job_card.json b/erpnext/manufacturing/doctype/job_card/job_card.json
index 39e7aac38ae..7f4fbdaef06 100644
--- a/erpnext/manufacturing/doctype/job_card/job_card.json
+++ b/erpnext/manufacturing/doctype/job_card/job_card.json
@@ -160,6 +160,7 @@
    "fieldname": "total_completed_qty",
    "fieldtype": "Float",
    "label": "Total Completed Qty",
+   "non_negative": 1,
    "read_only": 1
   },
   {
@@ -510,7 +511,7 @@
  ],
  "is_submittable": 1,
  "links": [],
- "modified": "2025-03-17 15:55:11.143456",
+ "modified": "2025-08-04 15:47:54.514290",
  "modified_by": "Administrator",
  "module": "Manufacturing",
  "name": "Job Card",
@@ -568,4 +569,4 @@
  "states": [],
  "title_field": "operation",
  "track_changes": 1
-}
\ No newline at end of file
+}
diff --git a/erpnext/manufacturing/doctype/job_card_time_log/job_card_time_log.json b/erpnext/manufacturing/doctype/job_card_time_log/job_card_time_log.json
index 6a86214986a..0565d677e9b 100644
--- a/erpnext/manufacturing/doctype/job_card_time_log/job_card_time_log.json
+++ b/erpnext/manufacturing/doctype/job_card_time_log/job_card_time_log.json
@@ -42,7 +42,8 @@
    "fieldname": "completed_qty",
    "fieldtype": "Float",
    "in_list_view": 1,
-   "label": "Completed Qty"
+   "label": "Completed Qty",
+   "non_negative": 1
   },
   {
    "fieldname": "employee",
@@ -63,7 +64,7 @@
  "index_web_pages_for_search": 1,
  "istable": 1,
  "links": [],
- "modified": "2024-05-21 12:40:55.765860",
+ "modified": "2025-08-04 15:47:11.748937",
  "modified_by": "Administrator",
  "module": "Manufacturing",
  "name": "Job Card Time Log",