Solution : https://service.sap.com/sap/support/notes/112600 (SAP Service marketplace login required)
Key words :
kstat = 'x' reason, kaip function group, 'object type' field, exit_saplv60b_004 customer exit, rw original document, 'document number' field, attached code corrections, sd billing documents, free return delivery, billing document point
Related Notes :
| 167246 | No a/c assignment check for statistical conditions |
| 160011 | Transfer invoiced quantity to CO document |
| 111309 | INFO: Transfer of quantities into CO-PA |