Solution : https://service.sap.com/sap/support/notes/685448 (SAP Service marketplace login required)
Key words :
default optional pass, function module ms_change_accass_po, short dump occurs, short dump, ms_change_accass_po solution, purchase orders, external services, program termination, - import parameterparameter, without_screen 'x'
Related Notes :
| 633082 | ECS:MS_CHANGE_ACCASS_EC import parameter DUNKEL missing |
| 630097 | BAPI_PO_CHANGE: Processing several service items |
| 608723 | ECS: Actual values deleted when changing service items |