Could an item revision or item structure associate with a customer

Summary:

The requirement is that assembly item number is not allowed to change. But we have some customers have special requirements for some components, is there a way to associate item structures for a customer or item revision, or other workaround?

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):