Bulk Filers can check A3 files for errors before uploading to My Alabama Taxes by using the AL_A3REPORT_CHECK.xls (Updated: 01/27/2015) utility. The Excel utility will check the file for errors based on the specifications provided by the Alabama Department of Revenue.
The A3 file must be comma delimited and include all fields in the order specified in the file layout. Although all fields are required to be included in the file, only certain fields require data. All money fields must include dollars and cents with decimals. Only .txt or .csv file extensions are allowed. Compressed (.zip) files are allowed as long as they contain only one .txt or .csv file.