fix: add validation for draft PR/PI in Asset

(cherry picked from commit 4cf481cca8)

erpnext/assets/doctype/asset/asset.py

@@ -128,6 +128,7 @@ class Asset(AccountsController):
 		self.validate_item()
 		self.validate_cost_center()
 		self.set_missing_values()
+		self.validate_linked_purchase_docs()
 		self.validate_gross_and_purchase_amount()
 		self.validate_finance_books()
 
@@ -409,6 +410,21 @@ class Asset(AccountsController):
 		if self.available_for_use_date and getdate(self.available_for_use_date) < getdate(self.purchase_date):
 			frappe.throw(_("Available-for-use Date should be after purchase date"))
 
+	def validate_linked_purchase_docs(self):
+		for doctype_field, doctype_name in [
+			("purchase_receipt", "Purchase Receipt"),
+			("purchase_invoice", "Purchase Invoice"),
+		]:
+			linked_doc = getattr(self, doctype_field, None)
+			if linked_doc:
+				docstatus = frappe.db.get_value(doctype_name, linked_doc, "docstatus")
+				if docstatus == 0:
+					frappe.throw(
+						_("{0} is still in Draft. Please submit it before saving the Asset.").format(
+							get_link_to_form(doctype_name, linked_doc)
+						)
+					)
+
 	def validate_gross_and_purchase_amount(self):
 		if self.is_existing_asset:
 			return