Solution : https://service.sap.com/sap/support/notes/324726 (SAP Service marketplace login required)
Key words :
menu path 'environment -> accounting docs, system issues error message kb420 ', -valuated goods receipt, actual line items, additional key words, coep record exists, attached program corrections, table coep, controlling document, material document
Related Notes :
| 677434 | CO-EP reports: Transfer prices and delta versions |
| 399188 | OKBA: CO document already exists |
| 324835 | MIGO/MB01: No quantity in CO |
| 110083 | MB31 non-valuated GR: no/double quantity in CO |