Ensure that the data entered is complete and correct. This error may show if an email is submitted in an incorrect format, such as missing the @ symbol or missing a . for .com, etc. Try making a test donation on your end to see if you can replicate it. If not, then it was probably user error.

To check if a required field was not populated, or there was a formatting issue in one of the fields.
  1. Go to Fundraising > Donation Management
  2. Select All Donation Forms
  3. Click Edit
  4. Click Design Donor Screens
  5. Next to Donation Form, click Edit
  6. Under the selected Data Elements (box on the right), highlight each field and click Save Order and Edit Selected
  7. Make sure that all required fields that show on the backend are visible on the frontend
To check if this is due to an Invalid Account Error.
  1. Run a Decline Transaction Details report.
  2. View the Error Code column to see if 26 Invalid Vendor Account appears
  3. Reference article Transaction error: 26 Invalid Vendor Account - for Payflowpro Gateway to resolve