There is SEPA, and SEPA
We have the additional problem that Odoo does not make it clear, which SEPA they are talking about. Because there are two variations: SEPA Credit, that is, the payment of suppliers etc., and SEPA Debit, in other words, the export of debit notes. Odoo Standard, however, does not cover both, only the possibility to use SEPA Credit.
But here, too, openfellas provide a solution that allows the customer to create a direct SEPA debit export. The following screenshots show the Direct Debit process: