Solution : https://service.sap.com/sap/support/notes/922003 (SAP Service marketplace login required)
Key words :
option 'delete obsolete records, prerequisites program error solution, internal memory consumption, abap/max_imode reason, report /sapapo/sdorder_del, /sapapo/posmapn table', table /sapapo/posmapn, /sapapo/posmapn-r3obj, /sapapo/posmapn, short dump
Related Notes :
958652 | /SAPAPO/SDORDER_DEL terminates with GETWA_NOT_ASSIGNED |
553476 | Composite SAP note: Report /sapapo/sdorder_del |