Bank of America Corp. for the first time acknowledged finding some mistakes in foreclosure files as it begins to resubmit documents in 102,000 cases. The Charlotte, N.C., lender discovered errors in 10 to 25 out of the first several hundred foreclosure cases it examined starting last Monday. The problems included improper paperwork, lack of signatures and missing files, said people familiar with the results. In certain cases, information about the property and payment history didn’t match.