Message type: E = Error
Message class:  SWN - WF Notif: Messages 
Message number: 000
Message text: *** Message class for e-mail notifications ***
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The SAP error message SWN000, which is related to the message class for e-mail notifications, typically indicates an issue with the configuration of the SAP Workflow Notification system. This error can occur when the system is unable to send email notifications for workflow events due to various reasons.
Cause: Missing Configuration: The email notification system may not be properly configured in the SAP system. Incorrect SMTP Settings: The Simple Mail Transfer Protocol (SMTP) settings may be incorrect or incomplete. Authorization Issues: The user or service account used for sending emails may not have the necessary authorizations. Inactive Workflow: The workflow that is supposed to trigger the email notification may not be active or properly defined. Email Address Issues: The recipient's email address may be missing or incorrectly formatted.
Solution: Check Configuration: Go to transaction code SWNCONFIG to check the configuration settings for the SAP Workflow Notification. Ensure that the necessary parameters are set correctly, including the email server settings. Verify SMTP
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