Solution : https://service.sap.com/sap/support/notes/303610 (SAP Service marketplace login required)
Key words :
'general settings' --> 'check units, additional key words, purchase order item, invoice verification correctly, invoicing plan manages, invoicing plan correctly, invoicing plan, choose 'units, order unit, compiled correctly
Related Notes :
| 634298 | FAQ: Commitment update in the service |