Financing confirmation eng. Schufa report

Hello, we have an urgent question and hope for help.

We have received financing for a new build including the plot of land.
The notary for the land has been completed, the mortgage of the DSL Bank has been registered. In about 3 weeks, the payment for the plot of land, which the bank partially participates in, will be made.
Now, an old bank of my husband placed a negative Schufa entry 3 days ago for a claim from early 2018 (and it was registered 2 years later). Completely unjustified, as the account was closed, but the cancellation was placed in the mailbox, while access was simultaneously blocked and it took him 3 months to find out about it. Never again Fidor Bank.
Will we now have problems with the bank for the house construction? We are absolutely unsettled.

Do you get into trouble with the bank for the house construction now?

Normally not. The loan has been approved, your creditworthiness has been currently analyzed, securities for the loan are in place.
Now go directly to the bank (they will get information about Schufa anyway) and talk.

Go directly to the bank now (they will get information from Schufa anyway) and talk.

On what legal basis does this happen? In what way is data protection irrelevant here? Transfer of personal data without consent?

Why talk? The bank doesn’t do a permanent credit check ... another question, figgor bank or not. This kind of thing doesn’t come as a surprise?!

Why talk? The bank doesn’t do permanent credit checks ... another question, figgor bank or not. This kind of thing is not surprising?!

Since April 18 no online access where the bank posted the letters. With every email inquiry to the bank, an email came always after 2 weeks saying it was being processed for 3 months! Never again fintech. And why an entry for something from 2018 after 2 years - that is incomprehensible. And we are bank employees. Lawyer, Federal Financial Supervisory Authority, ombudsman and co. are involved.

The bank doesn't do a permanent credit check

Pretty much yes. They automatically receive updates to their inquiries. Same as with Crefo. So they will definitely see the entry as well.