I'm sure there is, but I need to know more about your setup. What exactly are these order number types and how do you derive them?

Hello Richard,
Actually, first, all quotations/orders follow a common series company reference # (e.g. DES20210203, DES20210204 and so on). Afterwards, because one b2b customer group is billed locally, we issue local orders/invoices (one order/invoicing series), whilst, the second b2b customer group is global, and we issue (keep) a different series of orders/invoices #. Our customers may belong to both customer groups (depending on the job case: local vs. global) and we refer to the same providers for all of them.

Well, the Custom Sequential Number video shows how to create a custom sequential number like the one you show there. You would just need a field in the customer table to indicate which schema to use for their prefix. One could be DES##### and the other maybe LOCAL##### or whatever you want, based on that field.

Thank you very much for your reply.