Solution : https://service.sap.com/sap/support/notes/520934 (SAP Service marketplace login required)
Key words :
rules-based atp check, rules-based atp, 'tax/taps' combination, low order quantity, attached advance correction, sales order item, document flow reason, availability check, checked atp, item categories
Related Notes :
| 451108 | Rules-based ATP in APO: Customizing SD item categories |