Solution : https://service.sap.com/sap/support/notes/421657 (SAP Service marketplace login required)
Key words :
data element structure, call transaction se11, enter /sapapo/bop_stepname, enter /sapapo/atp_tool, select 'data type', source code correction, /sapapo/bop_resultbackorder processing, results list display, source code, /sapapo/bop_runtime
Related Notes :
488220 | Backorder processing: no change of date in runtime display |
420605 | Composite SAP Note for BOP performance in APO 3.0A |
370601 | Composite SAP note: APO 3.0 and 3.1 performance |