can't complete invoice (vendor) generate from "order credit" by counter.

when create a order credit at counter document mode.
a invoice vendor and a receipt material at draft status is generate.
invoice line and material line is matched.
because when complete material, a invoice matching is created.
after that, when complete invoice vendor, a new invoice matching is created
this make total quality match > total quality invoice. because exception is rise.
can't complete invoice vendor.