Dependent requirement not reducing PIR amount

I person a FERT with 1 constituent HALB.

I participate PIR's for HALB's to bring them successful up of clip arsenic they person 3 period pb clip (with nary project#).

FERT request gets created erstwhile a preservation is created against a created project.

Now erstwhile I tally MRP, I privation the PIR for the HALB to get reduced by the babelike requirements magnitude truthful we don't treble order.

Bear successful caput the FERT has a project# and the HALB does not. Also, income orders usage a dummy part# conscionable to complaint customer, truthful nary income bid engagement with these parts.

Any ideas?