Solution : https://service.sap.com/sap/support/notes/738434 (SAP Service marketplace login required)
Key words :
choose short text 'determine user-defined fields, choose menu path 'utilities -> regeneration', tab title 'tables' choose parameter, installed downgrade kit almbapi, change internal tables ct_header_int, import parameters choose parameter, create function module ibapi_z_get_appends_of_struc, almb_caufvd_srv_up_tab_intthen change badi ibapi_alm_ord_modify, user-defined fields, tab title 'methods'
Related Notes :
| 735696 | Notes for Downgrade Kit ALMBAPI: Relevance |
| 712236 | BAPI_ALM_ORDER_MAINTAIN: order numbers are not returned |
| 708508 | Downgrade BAPI_ALM_ORDER_MAINTAIN -> errors |