How To Fix CDS_UNIT_MESSAGE021 - Entity '&1' not found

SAP Error Message - Details

• Message type: E = Error

• Message class: CDS_UNIT_MESSAGE - Message Class

• Message number: 021

• Message text: Entity '&1' not found

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 CDS_UNIT_MESSAGE021 - Entity '&1' not found ?

  The SAP error message CDS_UNIT_MESSAGE021 with the description "Entity '&1' not found" typically occurs in the context of Core Data Services (CDS) views or when trying to access a specific entity in the SAP system. This error indicates that the system cannot find the specified entity, which could be due to several reasons.
  Causes:
  
  Entity Name Typo: The entity name specified in the query or code might be misspelled or incorrectly referenced.
  Entity Not Activated: The CDS view or entity may not be activated in the system. If it is newly created or modified, it needs to be activated.
  Authorization Issues: The user may not have the necessary authorizations to access the entity.
  Transport Issues: If the entity was transported from another system, it may not have been properly imported or activated in the target system.
  Namespace Issues: The entity might be in a different namespace, and the reference might not be correctly qualified.
  Database Table Issues: If the entity is based on a database table that has been deleted or renamed, this could also lead to the error.
  
  Solutions:
  
  Check Entity Name: Verify that the entity name is correctly spelled and matches the definition in the system.
  Activate the Entity: If the entity is newly created or modified, go to the relevant transaction (e.g., SE11 for database views or SE80 for CDS views) and activate the entity.
  Check Authorizations: Ensure that the user has the necessary authorizations to access the entity. This can be checked in transaction SU53 or by consulting with your security team.
  Review Transport Logs: If the entity was transported, check the transport logs to ensure that it was successfully imported and activated in the target system.
  Namespace Qualification: If the entity is in a different namespace, ensure that you are using the correct namespace prefix when referencing the entity.
  Database Integrity: Check if the underlying database tables or views exist and are accessible. If they have been deleted or renamed, you may need to recreate or adjust the CDS view accordingly.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SE11 (Data Dictionary), SE80 (Object Navigator), or SE37 (Function Module) to investigate the entity and its definition.
  CDS View Documentation: Review the documentation for the specific CDS view to understand its dependencies and requirements.
  SAP Notes: Check SAP Notes for any known issues related to the specific error message or entity you are working with.
  Debugging: If you have access, consider debugging the code or query that is generating the error to get more context on where the failure is occurring.
  
  By following these steps, you should be able to identify the cause of the CDS_UNIT_MESSAGE021 error and implement a suitable solution.