GR/IR difference and billing

Hi there,

This issue borders into MM side of things too but I'm posting it in SD billing. When there is a difference between GR and IR values in a PO and when the billing is run, which values does the system consider, is it the GR amount or the IR amount ? We are a service industry and the billing is through RRB, so when we run DP90 all the costs like labour, purchase etc will be billed to the customer.

Thanks

Swetha