The Sage 100 ERP (fka MAS90 or MAS200) file layouts are available online in either PDF or help file format. Beginning with version 4.4 you should look for the file layouts within your Sage 100 (fka MAS90 or MAS200) program by going to Tasks – Resources – File Layouts.
About Wayne Schulz
Wayne Schulz is a Sage 100 Consultant who has worked with Sage 100 and Sage 100c ( Formerly Sage MAS 90 and MAS 200) since 1986. He provides advanced Sage 100 technical support to companies located throughout the United States on all versions of Sage 100. If you are experiencing an issue with Sage 100, and would like to schedule a support session - please visit our request a Sage 100 diagnosis page.