Solution : https://service.sap.com/sap/support/notes/372278 (SAP Service marketplace login required)
Key words :
major performance problems occur, additional key words timeout, source code corrections, function module cif_reservation_select, integration model, manual reservations, short dump, integration models, implement note 367082, cif_reservation_select
Related Notes :
521111 | Transfer of the confirmed quantity to APO |
367082 | Transferring the confirmed quantity to APO |