When saving a purchase invoice we receive an error that the code suppliers and the code of the VAT cannot be used in this journal, in all our databases so not just once client.  

traceback 

error: {code: 200, message: "Odoo Server Error", data: {name: "odoo.exceptions.UserError",…}}
id: 69
jsonrpc: "2.0"

Opened a support ticket yesterday but it is still not solved can somebody please solve this or tell us how we can solve it ourselves,  because we are stuck. 

Thanks in advance.