Solution : https://service.sap.com/sap/support/notes/1082603 (SAP Service marketplace login required)
Key words :
set ev_exit = true, end standard processing, availability information reason, method trigger_execution, badi crm_atp_info_badi, method atp_info_relevance_check, atp profile, separate solution, terms crm_confirm_atp_to_check, program error
Related Notes :
1005051 | Executing availability information automatically |
881176 | FAQ: ATP: Availability information in R/3 |