Solution : https://service.sap.com/sap/support/notes/515215 (SAP Service marketplace login required)
Key words :
account assignment category blank, detailed line item screen, routine al_get_old_lines choose include, free item flag, charge automatically resets, invoice receipt flag, attached correction instructions, posted purchase order, routine al_get_old_lines, purchase order
Related Notes :
| 765927 | Purchase order without invoice item (FI311) |
| 682263 | Missing error FI311 in purchase order |
| 526915 | No deletion of FM irrelevant commitment |
| 522176 | Short Dump in LFMOIF01 as part of SAPLFMOI |
| 503585 | ME51N: FI311 for MRP generated purchase reqs and active FM |
| 488706 | Error FI311 when you post purchase order |
| 432611 | Unassigned PO items do not update FM |
| 420035 | Correction of note 391940: Incorrect error FI311 |
| 396914 | Reduction/adjustment of FM commitment is incorrect |
| 202093 | FI311: for requisition (account assignmt category U) |