Relieving Receipts

[BBritain]

Process: We are using landed cost receiving to capture all our cost for purchased raw material inventory and ERS to auto voucher/pay our carriers for the landed cost portion of this receipt. The material portion of the receipt is manually voucher matched by AP.

Issue: After the landed cost portion of the receipt has been paid to the carrier, in some cases it is determined that the material receipt is incorrect and needs to be reversed. If we break the link between the material and the landed cost portion of the receipt and reverse the receipt, it causes a Weighted Average Cost issue because the landed cost amount is not included in the calculation.

Question: Is there a way to process/relieve these receipts without reversing, voucher matching or affecting Weighted Average Costs?

Thanks!
Ben