Solution : https://service.sap.com/sap/support/notes/72058 (SAP Service marketplace login required)
Key words :
additional key words cn21, externally procured component, missing purchasing data, prerequisites program error, standard network, purchase requisition, 'cancel' function, transferring, foreground, generation
Related Notes :
| 71537 | No PReq if required entry fields not filled in PReq |