How To Fix MDQ_DATA_EXCHANGE166 - The assigned message class &1 does not have a message number &2.

SAP Error Message - Details

• Message type: E = Error

• Message class: MDQ_DATA_EXCHANGE - MDQ Data Exchange Message Class

• Message number: 166

• Message text: The assigned message class &1 does not have a message number &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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message MDQ_DATA_EXCHANGE166 - The assigned message class &1 does not have a message number &2. ?

  The SAP error message MDQ_DATA_EXCHANGE166 indicates that there is an issue with the message class and message number being referenced in the system. Specifically, it means that the assigned message class (denoted as &1) does not contain the specified message number (denoted as &2). This can occur in various scenarios, particularly when dealing with data exchange or message handling in SAP.
  Cause:
  
  Missing Message Definition: The message class specified does not have the message number defined in it. This could be due to a configuration error or a missing translation.
  Incorrect Configuration: The system might be configured to use a message class that is not properly set up or does not exist in the system.
  Transport Issues: If the message class was recently transported from another system, it may not have been transported correctly, leading to missing entries.
  
  Solution:
  
  Check Message Class: Use transaction code SE91 to check the message class and ensure that the message number exists. If it does not, you may need to create it or correct the reference.
  Create Missing Message: If the message number is indeed missing, you can create it in the message class using transaction SE91. Make sure to provide the appropriate text for the message.
  Review Configuration: Check the configuration settings related to the data exchange or the specific process you are working on. Ensure that the correct message class is being referenced.
  Transport Check: If the message class was recently transported, verify that the transport was successful and that all necessary objects were included. You may need to re-transport the message class if it is incomplete.
  Consult Documentation: Review any relevant documentation or notes related to the specific module or functionality you are working with to ensure that you are following the correct procedures.
  
  Related Information:
  
  Transaction Codes: 
  
  SE91: To view and maintain message classes.
  SE80: To explore the repository and check for related objects.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific message class or functionality you are working with.
  Support: If the issue persists after checking the above, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  By following these steps, you should be able to resolve the error message MDQ_DATA_EXCHANGE166 effectively.