Solution : https://service.sap.com/sap/support/notes/418685 (SAP Service marketplace login required)
Key words :
prerequisites purchase requisition number 0, error message mepo019 ', additional key words, system configuration correspondingly, transaction me21nis enabled, item number 0, item number, purchase requisition, purchase order, purchase requisitions
Related Notes :
| 30781 | Dep.reqs. of subcontracting PReqs not deleted |