What this is about
The stated totals could not be read reliably from the document, so whether the visible part and the invoice data name the same amounts remains unverified. If they differ, VAT can be owed twice (§ 14c UStG).
What to do
Compare net, VAT and gross with the document by hand before using the file.
Does the error keep coming back?
Then it is not chance but a pipe connected the wrong way. The free 15-minute check finds the spot.
Arrange a check