In the Bank of N.Y. Mellon v Anderson, the New York Supreme Court Appellate court got it right by ruling that submitting an affidavit to support a motion is insufficient to establish standing when the affiant cannot swear they are familiar with the servicer’s record keeping practices and procedures.
The mere attachment of a copy of a note to the verified complaint also failed to demonstrate that the servicer had physical possession of the note when the action was commenced, and was ruled insufficient to establish standing.

If every court in the United States demanded proof of standing before a suit is allowed to proceed, foreclosures would come to a screeching halt.  It is concerning that the Bank of NY Mellon was able to proceed in the first place, and the decision says a lot about the lower courts abuse of erroneous presumptions and lack of concern for jurisdiction.