How To Fix IM421 - Notification type & not defined

IM421 - Overview

• Message type: E = Error

• Message class: IM - Maintenance notifications

• Message number: 421

• Message text: Notification type & not defined

What causes this issue?

You tried to call up a notification type that is not contained in
tables provided.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Inform your system administrator.

Error message extract from SAP system. Copyright SAP SE.

IM421 - Details

• The SAP error message IM421, which states "Notification type & not defined," typically occurs when the system is unable to find a specific notification type that is referenced in a transaction or process. This can happen in various modules, such as Plant Maintenance (PM) or Quality Management (QM), where notifications are used to track issues, maintenance tasks, or quality inspections.
  
  Cause:
  
  Missing Configuration: The notification type that is being referenced has not been defined in the system configuration.
  Incorrect Notification Type: The notification type may have been incorrectly entered or is not valid for the current context.
  Authorization Issues: The user may not have the necessary authorizations to access the notification type.
  Transport Issues: If the system is newly upgraded or has had recent transports, the notification type may not have been included in the transport request.
  
  
  Solution:
  
  
  Check Configuration:
  
  Go to the configuration settings for the relevant module (e.g., PM or QM).
  Navigate to the section for defining