I'm getting exception message 20 against PO in MD04.
My case is as below:-
1) created sales order and Sales order BOM.
2) After MRP PR has been generated for child item and same has been converted to PO also.
3) Today MRP system genarated new PR for child item and exception message 20 appearing against PO.
My query is that why system put exception message 20(Cancelled) against PO and it is genuinely required also??