Error 41 EC_ValidateSalesOrders_ui.pvc (line numbers vary) Object Method in Info Screen is CREATEORDER. This error is caused by a missing record id, start position, or length in a map line.
The easiest way to find the map lines that are missing the data is to add the RecordID, StartPosition, and Length fields to the map line lookup and then search for any map lines with no RecordID, or a StartPosition or Length of zero. Enter the correct layout information and save the map line. Repeat for any map lines missing this information.