Developers
Mandate requires open invoice
Code: MANDATE_REQUIRES_OPEN_INVOICE
What it means
Pix Automático is turned on together with paying an open invoice, and there is none right now.
What to do
Read the status in the response. A 4xx status means the request was not accepted: check the request and what the message says, fix it and send it again. A 5xx status means the problem is on the DROPSZ side: try again after a moment, and contact support with the code if it keeps happening.
Problem type
https://dropsz.gg/docs/errors/mandate-requires-open-invoice