Hi
You are trying to maintain settlement rule for Order , so why you are choosing line item settlement for AUC category ?
if you are looking to follow the investment measure capitalization you shall chose investment in object class as Mr. Mukthar say
check point 164
SAP Best Practices Baseline Package
if you are willing to use line items settlement you need to see the below links
Create Budget profile and Activate Availability Control
Regards
Mahmoud El Nady
