Solution : https://service.sap.com/sap/support/notes/433919 (SAP Service marketplace login required)
Key words :
terms error message v1276, rules-based atp check, ls_result type /sapapo/rbaout, modify xvbap transporting sugrd, initial product substitution reason, 'exit_/sapapo/saplatpr_002', sales order processing, rule evaluation returns, product substitution procedure, ls_result transporting surea
Related Notes :
| 700386 | FAQ: Rules-based ATP |
| 577226 | Product substitution reason filled incorrectly after RBA |
| 440568 | DYNPRO_MSG_IN_HELP with input help on item category - APO |