Hi,

Check Company Access (Multi-Company Setup)

In a multi-company setup, each user must be allowed to access each company explicitly.

Go to:

Settings → Users → Your User → Allowed Companies

• Make sure all relevant companies are checked under "Allowed Companies"
• Check the active company at the top right (company switcher) — you can only see data from that company unless the view is truly multi-company-aware

Groups Are Not Enough — Check Record Rules

Even if you're in the correct groups (like "Sales Manager", "Accounting User"), each model (eg, res.partner , sale.order ) might have record rules like this:

[ '|' , ( 'company_id' , '=' , user.company_id. id ), ( 'company_id' , '=' , False )]

These rules restrict visibility to only records in your current company .

Fix:

• Go to Settings → Technical → Security → Record Rules
• Filter by model (eg, res.partner )
• Check if any rule has a domain like: ('company_id', '=', user.company_id.id)
• You may need to update the domain to:

['|',( 'company_id' , 'in' , user.company_ids.ids), ( 'company_id' , '=' , False )]

This allows the user to see records from all allowed companies , not just the currently active one.

If you're using custom modules (common in internal setups), some access rights may be restricted.

• Ask your developer (or check yourself in Studio/custom modules) for overrides on models like res.partner , sale.order , project.task , etc.

I hope it is use full