PO was issued to supplier for Qty of 10ea @ $1= $10
Goods Receipt was done for 10ea.
Supplier invoice comes in for 8ea @ $1= $8
Best course of action is naturally to inform Supplier and request a corrected invoice, then process the correction.
However, in case we can’t contact; what is the best process for this? We will likely get an additional invoice later for $2, but this might not get caught by AP as being part if the original transaction, especially if the correction does not have enough information or if the invoice carries multiple lines.