Solution : https://service.sap.com/sap/support/notes/792552 (SAP Service marketplace login required)
Key words :
transaction miro 'enter incoming invoice', sy-msgty solution maintain, runtime errors 'message type, allowed message types, message type 'a', message type 'e', message type 'i', message type 's', message type 'w', system message correctly
Related Notes :
| 1156325 | BAdIs in the Logistics Invoice Verification environment |