How To Fix MC822 - A proxy view can only be specified for database views

SAP Error Message - Details

• Message type: E = Error

• Message class: MC - Aggregate: views, matchcodes, lock objects

• Message number: 822

• Message text: A proxy view can only be specified for database views

What causes this issue?

You have entered a so-called proxy view for the current view. This means
that each select statement that is executed for the current view is
diverted to the proxy view. This function is only allowed, however, for
database views.

System Response

Activation of the current view is rejected.

How to fix this error?

You must therefore withdraw the definition of the proxy view or define
the current view as a database view.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC822 - A proxy view can only be specified for database views ?

  The SAP error message MC822, which states "A proxy view can only be specified for database views," typically occurs in the context of SAP's data modeling or reporting tools, particularly when working with views in the SAP BW (Business Warehouse) or SAP HANA environments. This error indicates that there is an issue with the type of view being used in a particular context.
  Cause:
  The error is caused by attempting to use a proxy view (which is a type of view that allows for the integration of data from different sources) in a situation where only database views are allowed. In SAP, database views are defined directly on database tables, while proxy views are more abstract and can involve multiple data sources or complex logic.
  Solution:
  To resolve the MC822 error, you can take the following steps:
  
  
  Check View Type: Ensure that the view you are trying to use is indeed a database view. You can do this by checking the definition of the view in the SAP system.
  
  
  Modify the View: If the view is a proxy view, consider creating a new database view that meets the requirements of your reporting or data modeling needs. This may involve:
  
  Creating a new database view that pulls data from the necessary tables.
  Ensuring that the new view adheres to the structure and data types expected by the reporting tool or process you are using.
  
  
  
  Review Documentation: Consult the SAP documentation or help resources related to the specific module or tool you are using. This can provide insights into the types of views supported and any specific requirements.
  
  
  Testing: After making changes, test the new database view in the context where the error occurred to ensure that it resolves the issue.
  
  
  Consult with SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  
  Related Information:
  
  SAP BW and HANA: Understanding the differences between database views and proxy views is crucial when working with SAP BW and HANA. Database views are typically more straightforward and directly tied to database tables, while proxy views can involve more complex data integration scenarios.
  Data Modeling Best Practices: Familiarize yourself with best practices for data modeling in SAP environments to avoid similar issues in the future.
  Error Handling: Learn about common error messages in SAP and how to troubleshoot them effectively.
  
  By following these steps and understanding the underlying concepts, you should be able to resolve the MC822 error and continue with your work in SAP.