Tax isn't calculated on AP invoce wher Supplier is an Employee

Hello,

I have problem with calculate tax on AP invoice wher supplier is Employee

Tax isn't calculated on payables invoice, where the supplier is the employee.

After pressing the button "calculate tax" line is not created with the record.

After pressing the button " tax details" is not filled out the required fields, they are empty (User can completed by hand, but User don't want to do that, the field must be to fill automatically)

I have problem only with one supplier.

Details on the screenshots attached to the task.

I'll be grateful for the help and the guidance.

Best Regards,