How To Fix ESH_OM_OBJ_MODEL_REP821 - Aggregation mode &1 does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_OM_OBJ_MODEL_REP - Object Model Repository

• Message number: 821

• Message text: Aggregation mode &1 does not exist

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 ESH_OM_OBJ_MODEL_REP821 - Aggregation mode &1 does not exist ?

  The SAP error message ESH_OM_OBJ_MODEL_REP821 indicates that there is an issue related to the aggregation mode specified in the context of the SAP Enterprise Search or the Object Model. This error typically arises when the system is unable to find the specified aggregation mode, which could be due to a variety of reasons.
  Cause:
  
  Invalid Aggregation Mode: The aggregation mode specified in the configuration or query does not exist in the system. This could be due to a typo or an outdated configuration.
  Missing Configuration: The necessary configuration for the aggregation mode may not have been set up in the system.
  Transport Issues: If the system has recently undergone a transport of changes, the aggregation mode may not have been included or properly activated.
  Version Compatibility: The aggregation mode may not be compatible with the current version of the SAP system or the specific components being used.
  
  Solution:
  
  Check Configuration: Verify the configuration settings for the aggregation mode in the relevant SAP transaction (e.g., ESH_COCKPIT or similar). Ensure that the aggregation mode you are trying to use is correctly defined.
  Correct Typographical Errors: Double-check for any typographical errors in the aggregation mode name in your query or configuration.
  Review Transport Requests: If the issue arose after a transport, check the transport logs to ensure that all necessary objects were included and activated.
  Consult Documentation: Refer to the SAP documentation or help portal for the specific version of your SAP system to ensure that the aggregation mode is supported.
  System Update: If the aggregation mode is part of a newer feature, ensure that your system is updated to the latest version or patch level that supports this feature.
  Contact SAP Support: If the issue persists, consider reaching out to SAP support for assistance, providing them with the error message and context for further investigation.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  Transaction Codes: Familiarize yourself with transaction codes related to Enterprise Search and Object Model configuration, such as ESH_COCKPIT, ESH_MAINTAIN, etc.
  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 suitable solution.