Is it possible to limit a business partner to a company ?
E.g. allow issuing an invoice for company #1, but block it for company #2.
You can use the BP/Company tab in the business partner function to block a BP to a company.
See onlie help on Field BPEACEAUZ:
For a multi-company management, you can set this field to No to disable the entry for the business partner on specific companies.
Hey there! Regarding your question, it is definitely possible to set limitations for a business partner within a company. You can restrict their ability to issue invoices for specific companies. To better understand how to implement such limitations, check out successionresource.com. They provide valuable insights into business planning, including succession strategies. They might have helpful tips or resources to guide you through this process. Good luck with your business partnerships! 
