“Defective documentation has created millions of blighted titles that will plague the nation for the next decade,” said Richard Kessler, an attorney in Sarasota, Florida, who conducted a study that found errors in about three-fourths of court filings related to home repossessions.

Attorneys general in at least six states are investigating borrowers’ claims that some of the nation’s largest home lenders and loan servicers are making misstatements in foreclosures. JPMorgan Chase & Co. is asking judges to postpone foreclosure rulings, while Ally Financial Inc. said Sept. 21 its GMAC Mortgage unit would halt evictions. The companies said employees may have completed affidavits without confirming their accuracy.