Solution : https://service.sap.com/sap/support/notes/628302 (SAP Service marketplace login required)
Key words :
call main program saplmlsp, implement correct include lmlspfrd, call function group mlsp, call include lmlspu53, attached correction instructions, symptom include lmlspu53, add include lmlspu53, include lmlspu53, function modules, terms mlsp
Related Notes :
630097 | BAPI_PO_CHANGE: Processing several service items |
593428 | BAPI_PO_CHANGE: New Include and structure enhancements |