How to stop customer address being copied over to supplier address level

Summary:

We have intercompany suppliers loaded in our system and found that there are addresses automatically created in system with purpose as bill to without anyone manually creating them. These happened after sites were created at customer level. Do we have any configuration that prevents them from happening.

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):