Restrict the document visibility(Purchase order,Invoices)in Purchasing role based on company code

Hi,

I have a requirement to restrict the document visibility (Purchase order and Invoices) in Purchasing role based on the company code.

In our org structure Multiple companies are assigned under a single Purchase organization and the document visibility should be restricted based on the company code assigned to user.

i tried through Role approach but we don't have any field to assign company code in the Role. There is only option for Purchase Organization but no company code.

can you please let me know if there is any way to achieve this functionality.

Thanks,

Satish Kumar