Hello @Klaus100,
Is the payment one you recognise and usually pay?
The only way to deal with this is to contact your bank. Do it by phone on the number you already have for them. If the message is an email don't reply to it or click any links in it in case it's a scam.
I would suspect that it's a scam as
you seem not to have expected the message
they use a method often used by scammers when they say it's urgent
they're asking you to authorise a payment which you haven't said here is a normal payment
It could be legitimate but one way to find out is to phone your bank.
Steve.