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It would be interesting to know what the bug is.

I can't translate the German site as I can't really get to it due to a popup.

A math problem, just not checking some transactions, something else?

"In one of these applications, two of the 121 parameters were not defined correctly. What the exact parameters are, the speaker did not want to say."

Is all the further information in the German article.

Thank you.

Which resulted in an incomplete second check of payments.

(Just to add the other small part.)

It doesn't give any specifics. "2 of 121 parameters were configured incorrectly". Maybe host and port? ;)