Solution : https://service.sap.com/sap/support/notes/430609 (SAP Service marketplace login required)
Key words :
accessing sd sales order data, additional key words atp, program error solution implement, symptom bad performance, source code correction, /sapapo/ordadm_i, /sapapo/schedlin, /sapapo/ordpart, prerequisites
Related Notes :
609435 | Composite SAP note: Performance in backorder processing |
420606 | Collective SAP Note for GATP performance in APO 3.0A |