Merge pull request #43129 from frappe/mergify/bp/version-15-hotfix/pr…

…-42801

fix(Delivery Note): translatability of validation errors (backport #42801)

erpnext/stock/doctype/delivery_note/delivery_note.py

@@ -362,52 +362,33 @@ def validate_references(self):
 		self.validate_sales_invoice_references()
 
 	def validate_sales_order_references(self):
-		err_msg = ""
-		for item in self.items:
-			if (item.against_sales_order and not item.so_detail) or (
-				not item.against_sales_order and item.so_detail
-			):
-				if not item.against_sales_order:
-					err_msg += (
-						_("'Sales Order' reference ({1}) is missing in row {0}").format(
-							frappe.bold(item.idx), frappe.bold("against_sales_order")
-						)
-						+ "<br>"
-					)
-				else:
-					err_msg += (
-						_("'Sales Order Item' reference ({1}) is missing in row {0}").format(
-							frappe.bold(item.idx), frappe.bold("so_detail")
-						)
-						+ "<br>"
-					)
-
-		if err_msg:
-			frappe.throw(err_msg, title=_("References to Sales Orders are Incomplete"))
+		self._validate_dependent_item_fields(
+			"against_sales_order", "so_detail", _("References to Sales Orders are Incomplete")
+		)
 
 	def validate_sales_invoice_references(self):
-		err_msg = ""
+		self._validate_dependent_item_fields(
+			"against_sales_invoice", "si_detail", _("References to Sales Invoices are Incomplete")
+		)
+
+	def _validate_dependent_item_fields(self, field_a: str, field_b: str, error_title: str):
+		errors = []
 		for item in self.items:
-			if (item.against_sales_invoice and not item.si_detail) or (
-				not item.against_sales_invoice and item.si_detail
-			):
-				if not item.against_sales_invoice:
-					err_msg += (
-						_("'Sales Invoice' reference ({1}) is missing in row {0}").format(
-							frappe.bold(item.idx), frappe.bold("against_sales_invoice")
-						)
-						+ "<br>"
-					)
-				else:
-					err_msg += (
-						_("'Sales Invoice Item' reference ({1}) is missing in row {0}").format(
-							frappe.bold(item.idx), frappe.bold("si_detail")
-						)
-						+ "<br>"
+			missing_label = None
+			if item.get(field_a) and not item.get(field_b):
+				missing_label = item.meta.get_label(field_b)
+			elif item.get(field_b) and not item.get(field_a):
+				missing_label = item.meta.get_label(field_a)
+
+			if missing_label and missing_label != "No Label":
+				errors.append(
+					_("The field {0} in row {1} is not set").format(
+						frappe.bold(_(missing_label)), frappe.bold(item.idx)
 					)
+				)
 
-		if err_msg:
-			frappe.throw(err_msg, title=_("References to Sales Invoices are Incomplete"))
+		if errors:
+			frappe.throw("<br>".join(errors), title=error_title)
 
 	def validate_proj_cust(self):
 		"""check for does customer belong to same project as entered.."""