How To Fix FDT_HRF126 - CDS document &1 contains calculated keys

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_HRF - FDT: HRF

• Message number: 126

• Message text: CDS document &1 contains calculated keys

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_HRF126 - CDS document &1 contains calculated keys ?

  The SAP error message FDT_HRF126 indicates that there is an issue with a Core Data Services (CDS) view or document that contains calculated keys. This typically occurs in the context of SAP Fiori or SAP S/4HANA applications where CDS views are used to define data models.
  Cause:
  The error arises when a CDS document (or view) is expected to contain only certain types of fields, but it includes calculated keys. Calculated keys are fields that are derived from other fields rather than being stored directly in the database. This can lead to issues in data retrieval or processing, especially if the system expects a certain structure or type of data.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review the CDS View Definition:
  
  Check the definition of the CDS view or document that is causing the error. Look for any fields that are defined as calculated keys.
  Ensure that the fields used as keys are either direct database fields or are properly defined as part of the key.
  
  
  
  Modify the CDS View:
  
  If you find calculated keys in the view, consider removing them from the key definition.
  If necessary, create a new field that can serve as a key without being calculated.
  
  
  
  Check for Dependencies:
  
  Ensure that there are no dependencies on the calculated keys in other parts of your application or data model. If there are, you may need to adjust those as well.
  
  
  
  Test the Changes:
  
  After making modifications, test the CDS view to ensure that it functions correctly and that the error no longer appears.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or community forums for additional guidance on best practices for defining keys in CDS views.
  
  
  
  Seek Help from SAP Support:
  
  If the issue persists, consider reaching out to SAP support for assistance, especially if this is a critical issue affecting your business processes.
  
  
  
  Related Information:
  
  CDS Views: Core Data Services (CDS) is a framework for defining data models in SAP. It allows for the creation of semantically rich data models that can be consumed by various applications.
  Calculated Fields: These are fields that derive their values from other fields, often using expressions or functions. While useful, they should be used carefully in key definitions.
  SAP Fiori: Many SAP Fiori applications rely on CDS views for their data models, so understanding how to properly define these views is crucial for Fiori development.
  
  By following these steps, you should be able to resolve the FDT_HRF126 error and ensure that your CDS documents are correctly defined.