We are currently in the process of implementing EWM. We would like to use EWM's Catch Weight Management feature. We do not intend to activate ECC CW.
In order for us for use CW at EWM level, Catch Weight needs to be activated in ECC article master by setting "Parallel Unit of Measure".
However, SAP does not allow us to do this (by default) for existing articles.
One option is to create new CW articles. Unfortunately, this is not something the business will accept.
There is a workaround which is to implement BAdI: Check Changes Made to Units of Measure.
However, we are nervous about implementing this BAdI given the unknowns and financial implications it may have. No one in SAP has been able to give us a definitive answer.
It must be noted that will needs to be done for articles at a new warehouse which will not have any valuation.