How to identify if there will be a Acquisition cost Adjustment or Write off event?

Summary:

Is there any identifier at PO Receipt level to identify if it will trigger an Acquisition Cost Adjustment or Write off?

Content (please ensure you mask any confidential information):

Our Client is using Periodic Average costing and there were lot of Acquisition Cost Adjustment or Write off entries that flowed into GL. We have looked into the Oracle published training and notes in Support portal. We have very few cases due to IPV and are able to understand its impact but it appears majority of the issues might be due to UOM conversion issues. For ex., PO price is always negotiated with UOM as CS but the standard UOM is BX (CS or 80 BX). There are multiple Purchase Orders issued on this basis and Receipts were also entered