How To Fix MPE_OAN204 - Group &1, version &2 is unknown in OAN &3, version &4

SAP Error Message - Details

• Message type: E = Error

• Message class: MPE_OAN - Operation Activity Network Messages

• Message number: 204

• Message text: Group &1, version &2 is unknown in OAN &3, version &4

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 MPE_OAN204 - Group &1, version &2 is unknown in OAN &3, version &4 ?

  The SAP error message MPE_OAN204 typically indicates that there is an issue with the configuration of a specific group and version in the context of an Object Assignment Number (OAN). This error can occur in various scenarios, particularly when dealing with master data or configuration settings in SAP.
  Cause:
  The error message "Group &1, version &2 is unknown in OAN &3, version &4" suggests that the system is unable to find the specified group and version combination for the given Object Assignment Number (OAN). This can happen due to several reasons:
  
  Incorrect Group or Version: The group or version specified in the transaction or configuration does not exist in the system.
  Data Inconsistency: There may be inconsistencies in the master data or configuration settings that lead to the system not recognizing the specified group/version.
  Missing Configuration: The necessary configuration for the group/version may not have been set up in the system.
  Transport Issues: If the configuration was recently transported from another system, it may not have been transported correctly.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  Verify Group and Version: Check the group and version specified in the error message. Ensure that they exist in the system and are correctly configured.
  Check OAN Configuration: Look into the configuration settings for the Object Assignment Number (OAN) to ensure that the specified group and version are correctly assigned.
  Data Consistency Check: Run consistency checks on the relevant master data to identify any discrepancies that may be causing the issue.
  Review Transport Logs: If the configuration was recently transported, review the transport logs to ensure that all necessary objects were included and correctly imported.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on the configuration of groups and versions in your context.
  Contact SAP Support: If the issue persists, consider reaching out to SAP support for further assistance, especially if it appears to be a system-level issue.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may need to use specific transaction codes to check configurations, such as SPRO for configuration settings or SE11 for data dictionary objects.
  SAP Notes: Search for relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.