Solution : https://service.sap.com/sap/support/notes/899982 (SAP Service marketplace login required)
Key words :
alm bapi downgrade kit, pm/cs order, relevant correction instructions, bapi_alm_order_maintain bapi, program correction, incorrectly receive, error message, terms saplnwbt, afabd-aplzl_nch, afabd-aplzl_vor
Related Notes :
1007368 | Changing relationship not possible using BAPI II |
708508 | Downgrade BAPI_ALM_ORDER_MAINTAIN -> errors |
633987 | Relationships maintenance prevented w/ incorrect msg. CN814 |
539597 | ALM order BAPIs: Error when maintaining relationship |
537755 | BAPI_ALM_ORDER_MAINTAIN: Relationship changes not saved |
525056 | Not possible to edit relationships |