How To Fix RSO_SEGR121 - Error in deserialization for Semantic Group '&1'

SAP Error Message - Details

• Message type: E = Error

• Message class: RSO_SEGR - Messages for TLOGO = SEGR (Semantic Group of ADSOs)

• Message number: 121

• Message text: Error in deserialization for Semantic Group '&1'

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSO_SEGR121 - Error in deserialization for Semantic Group '&1' ?

  The SAP error message RSO_SEGR121, which indicates "Error in deserialization for Semantic Group '&1'", typically occurs in the context of SAP BW (Business Warehouse) or SAP BW/4HANA when there is an issue with the data model or the semantic group configuration. This error can arise during the execution of queries, data extraction, or when trying to access certain data models.
  Causes:
  
  Corrupted Data Model: The semantic group or the associated data model may be corrupted or improperly configured.
  Version Mismatch: There may be a version mismatch between the data model and the underlying data source or between different components of the SAP system.
  Transport Issues: If the semantic group was transported from one system to another, there may have been issues during the transport process that led to inconsistencies.
  Missing Objects: Required objects (like InfoObjects, InfoProviders, etc.) that the semantic group depends on may be missing or not activated.
  Authorization Issues: Lack of proper authorizations to access the semantic group or its components can also lead to this error.
  
  Solutions:
  
  Check Configuration: Review the configuration of the semantic group and ensure that all required objects are correctly defined and activated.
  Rebuild the Semantic Group: If the semantic group is corrupted, consider rebuilding it. This may involve deleting and recreating the group or reactivating the associated objects.
  Transport Validation: If the issue arose after a transport, validate the transport logs and ensure that all objects were transported correctly. You may need to re-transport the affected objects.
  Check for Missing Objects: Verify that all necessary InfoObjects and InfoProviders are present and activated in the system.
  Authorization Check: Ensure that the user executing the query or accessing the semantic group has the necessary authorizations.
  System Logs: Check the system logs (transaction SLG1) for more detailed error messages that may provide additional context for the issue.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide patches and updates.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Documentation: Review the official SAP documentation for BW/4HANA or the specific version of SAP BW you are using for best practices related to semantic groups and data modeling.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to SAP Support for further assistance.