Solution : https://service.sap.com/sap/support/notes/426142 (SAP Service marketplace login required)
Key words :
additional key words me21, message 06876-'requisition quantity & & open, prerequisites program error, source code correction, purchase requisition, symptom create, purchase order, eban-ebakz, message 06876
Related Notes :
| 313071 | Incorrect open quantity for PO referenced by a PR |