Solution : https://service.sap.com/sap/support/notes/363989 (SAP Service marketplace login required)
Key words :
system generates error message v1331 'item &, contractrule-based global atp check, additional key words fcode_bearbeiten, error message, attached advance correction, item table, availability check, sales document, sales order, apo sourcing
Related Notes :
| 389687 | Error message V1427 when displaying changing document |
| 383051 | Problems with APO Sourcing in sales order |
| 334731 | Change document 'Item was deleted' |