How To Fix FDT_CORE021 - Type not supported; not element, structure or table type

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_CORE - Formula & Derivation Tool: Core

• Message number: 021

• Message text: Type not supported; not element, structure or table type

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_CORE021 - Type not supported; not element, structure or table type ?

  The SAP error message FDT_CORE021: Type not supported; not element, structure or table type typically occurs in the context of SAP's Field Data Tool (FDT) or when working with data types in ABAP or other SAP-related development environments. This error indicates that the system encountered a data type that it does not recognize or support in the context where it is being used.
  Causes:
  
  Unsupported Data Type: The data type being referenced is not one of the supported types (element, structure, or table).
  Incorrect Mapping: There may be an issue with how data types are mapped in the FDT or in the ABAP code.
  Configuration Issues: The configuration of the FDT or the data model may not be set up correctly, leading to unsupported types being referenced.
  Version Compatibility: The version of the FDT or the underlying SAP system may not support certain data types that are being used.
  
  Solutions:
  
  Check Data Types: Review the data types being used in your FDT configuration or ABAP code. Ensure that they are either elements, structures, or tables.
  Update Configuration: If you are using custom data types, consider updating your configuration to use supported types. You may need to create a new structure or table that conforms to the expected types.
  Review Mappings: If you are mapping fields in FDT, ensure that the mappings are correct and that you are not trying to map unsupported types.
  Consult Documentation: Refer to the SAP documentation for the Field Data Tool and ensure that you are following the guidelines for data types.
  Check for Updates: Ensure that your SAP system and FDT are up to date. Sometimes, newer versions may support additional data types.
  Debugging: If you have access to debugging tools, you can trace the execution to see where the unsupported type is being referenced.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the FDT and this specific error message.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found.
  Documentation: Review the official SAP Help Portal for detailed information on the Field Data Tool and supported data types.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.