How do I resolve the ADS Upload error "Exception occurred while retrieving files from PDI Server. Server replied with error: The system cannot find the file specified"?

You will want to ensure that the worksheet is named Sheet1 (no spaces). If it isn’t, you must rename it back to Sheet1 and resubmit the document. Otherwise, the PDI map that enables the upload will not be found. If you’re still having problems, download a new spreadsheet from the Forms page (under ADS section), complete the new spreadsheet, and resubmit it.