Option to avoid the error message for by-product items in Actual Costing Process

Hi,

We are having many number of by-products as a result of production process.  In our case, the by-products are  zero cost items and having no impact on product cost.  During Actual Cost Process, system is logging the error message like "Cannot find the transfer cost for the item "XXXX" in the organization "XXXX".  There are around 3500 to 4000 error message lines are writing for a period (by-product entry transaction date wise).  Actual transaction is by-product completion entry in the production batch but system is writing the error message like "No transfer cost for the item XXXX".  Since the number of error