SAP SRM - Company Codes only visible for SAP_ALL

Having an issue with company codes in SRM7 - we've created the user, user_gen, purchasing group and contract person created and the relevant company code attributes inherited.

Problem is when we go to create a PO we can only see these codes if the user has SAP_ALL access, otherwise the list is blank.

We've created a role in PFCG and and the authorisation object- gone to BBP Component - Process Purchase Orders and given full access there and generated - but to no avail.

Any ideas?