Solution : https://service.sap.com/sap/support/notes/1507262 (SAP Service marketplace login required)
Key words :
img table v_bbp_extpo_gl flags 'backend check', change erp message control bbp_pd047, symptom budget check returns, realtime budget check returns, srm standard role resp, img table bbp_v_c_accfc, budget carrying object wbs_elem_e, availability control check, se16 table bbpv_pdmsg_cus, realtime fi validation
Related Notes :
| 1081758 | FAQ: Budget Check/Display |
| 815849 | FAQ: Account assignment system response |
| 520717 | Budget check in EBP |