Solution : https://service.sap.com/sap/support/notes/1089462 (SAP Service marketplace login required)
Key words :
terms collective purchase requisition, generate purchase requisitions, change existing items, add long texts, purchase requisition, long texts, change documents, account assignment, cdpos reason, program error
Related Notes :
1447078 | IW32: Update termination in FM MEDCM_UPDATE_REVISION |
887341 | Incorrect change documents for long texts of external PReqs |