fix: prevent concurrency issues

(cherry picked from commit a186b1266d)

erpnext/stock/deprecated_serial_batch.py

@@ -141,6 +141,7 @@ class DeprecatedBatchNoValuation:
 				& (sle.batch_no.isnotnull())
 				& (sle.is_cancelled == 0)
 			)
+			.for_update()
 			.groupby(sle.batch_no)
 		)
 
@@ -232,6 +233,7 @@ class DeprecatedBatchNoValuation:
 				& (sle.is_cancelled == 0)
 				& (sle.batch_no.isin(self.non_batchwise_valuation_batches))
 			)
+			.for_update()
 			.where(timestamp_condition)
 			.groupby(sle.batch_no)
 		)
@@ -278,6 +280,7 @@ class DeprecatedBatchNoValuation:
 			.where(timestamp_condition)
 			.orderby(sle.posting_datetime, order=Order.desc)
 			.orderby(sle.creation, order=Order.desc)
+			.for_update()
 			.limit(1)
 		)
 
@@ -330,6 +333,7 @@ class DeprecatedBatchNoValuation:
 				& (bundle.type_of_transaction.isin(["Inward", "Outward"]))
 				& (bundle_child.batch_no.isin(self.non_batchwise_valuation_batches))
 			)
+			.for_update()
 			.where(timestamp_condition)
 			.groupby(bundle_child.batch_no)
 		)

erpnext/stock/serial_batch_bundle.py

@@ -723,6 +723,7 @@ class BatchNoValuation(DeprecatedBatchNoValuation):
 				& (parent.is_cancelled == 0)
 				& (parent.type_of_transaction.isin(["Inward", "Outward"]))
 			)
+			.for_update()
 			.groupby(child.batch_no)
 		)