Hi dear admins,

I'm struggling with a recurring issue.

I have a client who works as a freelancer and needs to invoice his clients under two headings, for example, one is services he provide and the other is furniture sales.

When generating invoices, I have created the corresponding journals, but the only thing Odoo doesn't seem to understand is the change in format in the invoice serialisation.

For example, for services I use the format SER25/001 and for furniture sales I use the serialisation MAT25/001. This does not seem to make sense to the programme and it keeps telling me that the serialisation format has changed, etc.

Could you tell me the correct way to proceed?