How To Fix /PLMU/UI_FRW004 - No ABB registered to handle CNR events

/PLMU/UI_FRW004 - Overview

• Message type: E = Error

• Message class: /PLMU/UI_FRW -

• Message number: 004

• Message text: No ABB registered to handle CNR events

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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/PLMU/UI_FRW004 - Details

• The SAP error message /PLMU/UI_FRW004 No ABB registered to handle CNR events typically indicates that there is an issue with the configuration of the Application Business Blueprint (ABB) in the SAP system. This error is related to the handling of CNR (Change Notification Request) events, which are part of the SAP's event-driven architecture.
  
  Cause:
  
  Missing Configuration: The error usually arises when there is no Application Business Blueprint (ABB) registered to handle the specific CNR events in the system.
  Incorrect Setup: The system may not have been set up correctly to handle the events, or the necessary components may not be activated.
  Transport Issues: If the configuration was recently transported from another system, it may not have been set up correctly in the target system.
  
  
  Solution:
  
  
  Check ABB Configuration:
  
  Go to the transaction code SPRO and navigate to the relevant configuration settings for the Application Business Blueprint.
  Ensure that the ABB is correctly defined and that it is set