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    Nintex Knowledge Base

    Error "Failed to send notification. The parameter login cannot be empty or bigger than 251 characters"

    Summary
    A Workflow is failing to send a notification email, either at a task action or a "Send Notification" action, with the following error. Failed to send notification. The parameter login cannot be empty or bigger than 251 characters.

    Solution
    Check to see if you are sending an email to {Common:Manager} or other profile-focused reference:
    1. Add a "Log to History" action to the Workflow as the first action.
    2. Choose to log the "Manager" (or similar) reference.
    3. Run the Workflow and then check the Workflow History to confirm the value being picked up.
    In some non-production environments, the Manager field (as an example) in Active Directory is not populated and this is what would be causing the issue.