Merge pull request #38774 from ShrihariMahabal/prevent-single-virtual-doctype-persistence

fix: prevent persistence of virtual single doctypes

frappe/model/document.py

@@ -898,6 +898,9 @@ class Document(BaseDocument):
 
 	def update_single(self, d):
 		"""Updates values for Single type Document in `tabSingles`."""
+		if self.meta.is_virtual:
+			return
+
 		frappe.db.delete("Singles", {"doctype": self.doctype})
 		for field, value in d.items():
 			if field != "doctype":