How To Fix CFD_RUNTIME054 - Only one key field supported, but found &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CFD_RUNTIME - Custom Fields: Runtime Data

• Message number: 054

• Message text: Only one key field supported, but found &1

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 CFD_RUNTIME054 - Only one key field supported, but found &1 ?

  The SAP error message CFD_RUNTIME054 indicates that there is an issue with the key fields in a data structure or a configuration where only one key field is expected, but multiple key fields have been found. This error typically arises in contexts such as data processing, configuration of data models, or when working with certain SAP applications that require specific key field definitions.
  Cause:
  
  
  Multiple Key Fields Defined: The primary cause of this error is that the system has detected more than one key field in a context where only one is allowed. This can happen in various scenarios, such as:
  
  When defining a data model or structure.
  When configuring a data source or target in SAP Data Services or similar tools.
  When using certain APIs or function modules that expect a single key field.
  
  
  
  Incorrect Configuration: The configuration settings may not align with the expected structure, leading to the system interpreting multiple fields as key fields.
  
  
  Data Input Issues: If data is being imported or processed, the input data may contain multiple fields that the system interprets as keys.
  
  
  Solution:
  
  
  Review Key Field Definitions: Check the configuration or data model where the error is occurring. Ensure that only one key field is defined. If multiple fields are defined as keys, modify the configuration to retain only the necessary key field.
  
  
  Adjust Data Structures: If you are working with custom data structures, ensure that the structure is defined correctly with only one key field. This may involve modifying the data dictionary or the relevant data model.
  
  
  Check Data Input: If the error occurs during data processing, review the input data to ensure that it conforms to the expected format and does not contain multiple key fields.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific module or function you are working with to understand the requirements for key fields.
  
  
  Testing: After making the necessary adjustments, test the configuration or data processing again to ensure that the error is resolved.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common errors.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed. Other users may have encountered the same error and can provide insights or solutions.
  SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance.
  
  By following these steps, you should be able to identify the cause of the CFD_RUNTIME054 error and implement a solution to resolve it.