Merge pull request #54977 from frappe/mergify/bp/version-15-hotfix/pr-54962

fix: incoming rate for legacy serial no (backport #54962)

erpnext/stock/deprecated_serial_batch.py

@@ -30,11 +30,20 @@ class DeprecatedSerialNoValuation:
 	def get_incoming_value_for_serial_nos(self, serial_nos):
 		from erpnext.stock.utils import get_combine_datetime
 
+		do_not_fetch_rate = frappe.db.get_single_value(
+			"Stock Reposting Settings", "do_not_fetch_incoming_rate_from_serial_no"
+		)
+
 		# get rate from serial nos within same company
 		incoming_values = 0.0
 		for serial_no in serial_nos:
 			sn_details = frappe.db.get_value("Serial No", serial_no, ["purchase_rate", "company"], as_dict=1)
-			if sn_details and sn_details.purchase_rate and sn_details.company == self.sle.company:
+			if (
+				sn_details
+				and sn_details.purchase_rate
+				and sn_details.company == self.sle.company
+				and (not frappe.flags.through_repost_item_valuation or not do_not_fetch_rate)
+			):
 				self.serial_no_incoming_rate[serial_no] += flt(sn_details.purchase_rate)
 				incoming_values += self.serial_no_incoming_rate[serial_no]
 				continue

erpnext/stock/doctype/stock_reposting_settings/stock_reposting_settings.json

@@ -1,5 +1,6 @@
 {
  "actions": [],
+ "allow_bulk_edit": 1,
  "allow_rename": 1,
  "beta": 1,
  "creation": "2021-10-01 10:56:30.814787",
@@ -13,6 +14,7 @@
   "end_time",
   "limits_dont_apply_on",
   "item_based_reposting",
+  "do_not_fetch_incoming_rate_from_serial_no",
   "errors_notification_section",
   "notify_reposting_error_to_role"
  ],
@@ -65,12 +67,19 @@
    "fieldname": "errors_notification_section",
    "fieldtype": "Section Break",
    "label": "Errors Notification"
+  },
+  {
+   "default": "0",
+   "description": "For legacy serial nos, do not fetch incoming rate from serial no and calculate it based on the inward transaction",
+   "fieldname": "do_not_fetch_incoming_rate_from_serial_no",
+   "fieldtype": "Check",
+   "label": "Do not fetch incoming rate from Serial No"
   }
  ],
  "index_web_pages_for_search": 1,
  "issingle": 1,
  "links": [],
- "modified": "2025-07-08 11:27:46.659056",
+ "modified": "2026-05-15 12:59:34.392491",
  "modified_by": "Administrator",
  "module": "Stock",
  "name": "Stock Reposting Settings",

erpnext/stock/doctype/stock_reposting_settings/stock_reposting_settings.py

@@ -16,6 +16,7 @@ class StockRepostingSettings(Document):
 	if TYPE_CHECKING:
 		from frappe.types import DF
 
+		do_not_fetch_incoming_rate_from_serial_no: DF.Check
 		end_time: DF.Time | None
 		item_based_reposting: DF.Check
 		limit_reposting_timeslot: DF.Check