How To Fix /MOC/CONFIG016 - Only one main reference object is allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: /MOC/CONFIG -

• Message number: 016

• Message text: Only one main reference object is allowed

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 /MOC/CONFIG016 - Only one main reference object is allowed ?

  The SAP error message /MOC/CONFIG016: Only one main reference object is allowed typically occurs in the context of SAP's Master Object Configuration (MOC) or similar configuration scenarios where a main reference object is expected. This error indicates that the system has detected multiple main reference objects when only one is permitted.
  Cause:
  
  
  Multiple Main Reference Objects: The primary cause of this error is that the configuration or data entry process has inadvertently assigned more than one object as the main reference object. This can happen during the creation or modification of a configuration where the system expects a single main reference.
  
  
  Data Integrity Issues: There may be inconsistencies in the data that lead the system to believe that multiple main reference objects are defined.
  
  
  Configuration Errors: Incorrect settings or configurations in the MOC or related modules can lead to this error.
  
  
  Solution:
  
  
  Review Configuration: Check the configuration settings where the error occurred. Ensure that only one object is marked as the main reference object. You may need to navigate to the relevant configuration screen and verify the settings.
  
  
  Data Cleanup: If there are multiple entries that are incorrectly marked as main reference objects, you will need to correct this by either deleting or reassigning the main reference status to the appropriate object.
  
  
  Consult Documentation: Refer to the SAP documentation or help files related to the specific module you are working with. This can provide insights into how to properly configure main reference objects.
  
  
  Use Transaction Codes: If applicable, use transaction codes like MOC1, MOC2, or others relevant to your configuration to access and modify the settings.
  
  
  Check for Updates: Ensure that your SAP system is up to date with the latest patches and updates, as sometimes bugs in earlier versions can lead to unexpected behavior.
  
  
  Seek Help from SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance. They can provide more detailed insights based on your specific system configuration.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or fixes related to this error message. SAP Notes often contain valuable information about specific error messages and their resolutions.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed. Other users may have encountered the same error and can share their solutions.
  Training and Documentation: If you are frequently working with MOC or similar configurations, consider additional training or reviewing documentation to better understand the configuration requirements and limitations.
  
  By following these steps, you should be able to resolve the error and ensure that your configuration adheres to the requirements of having only one main reference object.