Solution : https://service.sap.com/sap/support/notes/925598 (SAP Service marketplace login required)
Key words :
text 'location-product hierarchy' iv_uom_parea type /sapapo/unit optional set, iv_locprod_hier type /sapapo/relid optional set, function module /sapapo/msnp_get_keyf_sdp_cust, terms /sapapo/snp94, final assembly reason, prerequisites code error, relevant sp level, apply code correction, unit conversion, /sapapo/sdp94
Related Notes :
1111039 | Aggregation mode 3/4 and MTO production |
771643 | Display MTO production and/or forecasting w/o final assembly |