We have several client which rename SKUs in their ERP instead of deactivating and create a new one for multiple reasons. Recently one of them ask us to create a "Master UID" for them to map and update our products, but this field is internal only and not visible to the customers, so it's an internal ID used between the ERP, PIM and Configured Commerce to update the product.

Can such a field be added and could be used as an alternate natural key to simplify everything? Seems to us like a common issue.