I've customized a new transfer purchase order type : TRA.
When I go to ME21N and choose TRA type, SAP displays this error message :
"Field selection ZTR not defined
Message no. ME028
The field selection required by the system is not defined in table 162.
Further processing is currently not possible."
How can I fix that please ?
Check in IMG - MM - Purchasing - Purchase order -define screen layout - Check any field selction ZTR has been configured. And also check in Purchasing - purchase order - define document types - your PO doc type has reference to field selection group ZTR - if yes change it..