How To Fix /IWBEP/CM_CP211 - Cached entries already exist. No additional expand and select allowed.

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_CP -

• Message number: 211

• Message text: Cached entries already exist. No additional expand and select allowed.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_CP211 - Cached entries already exist. No additional expand and select allowed. ?

  The SAP error message /IWBEP/CM_CP211 Cached entries already exist. No additional expand and select allowed. typically occurs in the context of OData services when there are issues related to the handling of cached entries in the context of an OData request. This error is often seen when trying to expand or select additional fields in a query that has already been processed and cached.
  Cause:
  
  Caching Mechanism: The OData service uses a caching mechanism to optimize performance. When a request is made, the results are cached. If a subsequent request tries to expand or select additional fields that are not compatible with the cached results, this error can occur.
  Request Structure: The structure of the OData request may be incorrect or not aligned with the service definition, leading to conflicts with the cached entries.
  Concurrency Issues: If multiple requests are being processed simultaneously, it may lead to conflicts in the cache.
  
  Solution:
  
  Modify the Request: Ensure that the OData request does not attempt to expand or select additional fields that are not supported or that conflict with the cached entries. Review the service metadata to understand the available fields and relationships.
  Clear Cache: If possible, clear the cache for the OData service. This can often be done through transaction codes like /IWFND/MAINT_SERVICE or by using specific cache management tools in your SAP system.
  Check Service Implementation: Review the implementation of the OData service to ensure that it correctly handles expand and select requests. This may involve checking the underlying ABAP code or service definitions.
  Use Different Queries: If you need to retrieve different data, consider breaking down the requests into smaller, more specific queries that do not conflict with the cached data.
  Consult Documentation: Refer to SAP documentation or community forums for any known issues or updates related to the specific version of the OData service you are using.
  
  Related Information:
  
  OData Services: Understanding how OData services work in SAP, including the concepts of entity sets, navigation properties, and query options (like $expand and $select).
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide patches or updates to the OData framework.
  Performance Tuning: Consider performance tuning strategies for OData services, including optimizing the data model and reducing the complexity of queries.
  
  If the issue persists after trying the above solutions, it may be beneficial to engage with SAP support or consult with a technical expert familiar with OData services in SAP.