How To Fix NRSCNV166 - Customer exit &1 does not exist or does not implement interface &2

SAP Error Message - Details

• Message type: E = Error

• Message class: NRSCNV - Message class

• Message number: 166

• Message text: Customer exit &1 does not exist or does not implement interface &2

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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Smart SAP Assistant

• What is the cause and solution for SAP error message NRSCNV166 - Customer exit &1 does not exist or does not implement interface &2 ?

  The SAP error message NRSCNV166 indicates that a customer exit (a custom enhancement or modification) specified in the system does not exist or does not implement the required interface. This error typically arises during the execution of a program or transaction that relies on a specific customer exit to function correctly.
  Cause:
  
  Non-Existent Customer Exit: The specified customer exit has not been created or is not available in the system.
  Incorrect Implementation: The customer exit exists but does not implement the required interface or method that the calling program expects.
  Transport Issues: The customer exit may exist in a different system (e.g., development) but has not been transported to the current system (e.g., production).
  Naming Issues: There may be a typo or incorrect naming in the configuration or code that references the customer exit.
  
  Solution:
  
  Check Existence: Verify that the customer exit exists in the system. You can do this by checking the relevant enhancement or modification in transaction SE80 (Object Navigator) or SE19 (Customer Exits).
  Review Implementation: If the customer exit exists, ensure that it correctly implements the required interface. You can check the implementation in transaction SE80 or SE19.
  Transport the Exit: If the exit is missing, check if it has been created in another system and ensure it is transported to the current system.
  Correct Naming: Double-check the naming of the customer exit in the code or configuration to ensure there are no typos or incorrect references.
  Debugging: If you have access to debugging tools, you can set breakpoints to see where the error occurs and gather more context about the issue.
  
  Related Information:
  
  Transaction Codes: 
  
  SE80: Object Navigator
  SE19: Customer Exits
  SE37: Function Module
  SE11: Data Dictionary
  
  
  Documentation: Review SAP documentation related to customer exits and enhancements for more detailed guidance on implementation and usage.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  If the issue persists after following these steps, consider reaching out to your SAP support team or consulting with a developer who has experience with customer exits and enhancements in SAP.