This error is generated by Authorize.net when there is a required field mismatch in the set up of the merchant account in comparison to the fields submitted by the Blackbaud NetCommunity donation form. Authorize.net allows for additional fields not on the Blackbaud NetCommunity donation form to be marked as required. If one of these fields is required that is not on the donation form, Authorize.net will attempt to validate the missing field and return the error. You can check these settings by following these steps:
  1. Log in to your Authorize.net account
  2. Click on Account in the navigation bar
  3. Locate the Payment Form link in the Transaction Format Settings section
  4. Follow the link to the Form Fields
  5. Ensure all your items have the Required field unchecked
For additional information or if you have any questions regarding these steps, please contact Authorize.net support (BB716993).