How To Fix CFD_REGISTRY_CHECK355 - Business Context NOTIFICATION_HEADER must not be used in a union

SAP Error Message - Details

• Message type: E = Error

• Message class: CFD_REGISTRY_CHECK - Custom Fields: Messages for Registry Check

• Message number: 355

• Message text: Business Context NOTIFICATION_HEADER must not be used in a union

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CFD_REGISTRY_CHECK355 - Business Context NOTIFICATION_HEADER must not be used in a union ?

  The SAP error message CFD_REGISTRY_CHECK355 indicates that there is an issue with the use of the NOTIFICATION_HEADER business context in a union operation within your SAP application. This error typically arises in the context of SAP Cloud Application Programming (CAP) or when working with Business Object definitions in SAP systems.
  Cause:
  The error occurs because the NOTIFICATION_HEADER business context is not designed to be used in a union operation. In SAP, certain business contexts have specific rules regarding how they can be combined or manipulated. A union operation attempts to combine two or more datasets, but if one of the datasets involves a business context that is not compatible with unions, this error will be triggered.
  Solution:
  To resolve this error, you can consider the following approaches:
  
  
  Review Business Context Usage: Check the definition of the NOTIFICATION_HEADER business context and ensure that it is not being used in a union operation. If it is, you may need to refactor your code to avoid this usage.
  
  
  Separate Queries: Instead of using a union, consider executing separate queries for the different datasets you need. You can then handle the results in your application logic.
  
  
  Use Compatible Business Contexts: If you need to perform a union operation, ensure that you are using business contexts that are compatible with unions. Review the documentation for the business contexts you are working with to identify which ones can be used together.
  
  
  Consult Documentation: Refer to the SAP documentation or help resources for specific guidelines on using business contexts and unions. This can provide insights into the limitations and best practices.
  
  
  Error Handling: Implement error handling in your application to catch this specific error and provide a user-friendly message or alternative actions.
  
  
  Related Information:
  
  SAP Documentation: Check the official SAP Help Portal for detailed information on business contexts and their usage.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and how they resolved them.
  SAP Notes: Look for any relevant SAP Notes that might address this specific error or provide additional context.
  
  By following these steps, you should be able to identify the root cause of the error and implement a suitable solution.