Solution : https://service.sap.com/sap/support/notes/914627 (SAP Service marketplace login required)
Key words :
schedule line fields vbep-bdart, schedule line category, vbuk-cmgst = 'b', standard system behavior, -mrp material reason, open credit values, sales order item, material requirements planning, mrp material, sales order
Related Notes :
| 1067486 | Incorrect credit value when you increase delivery quantity |
| 674112 | Updating of credit values in spite of credit block |
| 393304 | Confirmed quantity not cancelled in spite of block |
| 377165 | Update open credit values for credit management |