I'm using the following steps to produce this error:
- Under the 'Contributions' tab of a contact on CiviCRM, click 'Recurring Contributions'
- Click 'View' under the individual's recurring contribution
- Clicking any of the following links (View, Edit, or Process)...
...results in the following error: 'Warning: Unable to retrieve card details from iATS. Error: Invalid Username or Password' (please see screenshot below)
Donations seem to be processing fine on CiviCRM and iATS, and CiviCRM and iATS seem to be communicating fine with each other (other than this error).