How To Fix FDT_CORE039 - Neither data type nor reference defined

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 039

• Message text: Neither data type nor reference defined

What causes this issue?

For the current data object, neither a type has been defined nor has
another element been bound to the data object from which the system
could derive a data type. The definition of the data object is therefore
incomplete.

System Response

The data object cannot be activated.

How to fix this error?

Make sure the data object has a type assigned. You can accomplish this
by either directly assigning one of the data types offered by BRFplus or
by binding the data object to another element from which the data object
will then inherit its type.

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 FDT_CORE039 - Neither data type nor reference defined ?

  The SAP error message FDT_CORE039: Neither data type nor reference defined typically occurs in the context of SAP Fiori or SAP UI5 applications, particularly when dealing with the Field Definition Tool (FDT) or when defining data types for fields in a UI5 application. This error indicates that the system is unable to find a valid data type or reference for a field that is being processed.
  Causes:
  
  Missing Data Type Definition: The field in question does not have an associated data type defined in the system.
  Incorrect Field Mapping: The field may be incorrectly mapped to a data type or reference that does not exist.
  Configuration Issues: There may be issues in the configuration of the Fiori app or the underlying data model.
  Transport Issues: If the application was transported from one system to another, the data type definitions may not have been included in the transport request.
  
  Solutions:
  
  
  Define Data Type: Ensure that the data type for the field is properly defined in the system. You can do this by:
  
  Navigating to the relevant data model or field definition in the FDT.
  Creating or linking the appropriate data type to the field.
  
  
  
  Check Field Mapping: Review the field mappings in your application to ensure that they are correctly set up. Make sure that each field is mapped to a valid data type.
  
  
  Review Configuration: Check the configuration settings of the Fiori app or the underlying data model to ensure that everything is set up correctly.
  
  
  Transport Check: If the issue arose after a transport, verify that all necessary objects, including data types, were included in the transport request. You may need to re-transport the missing objects.
  
  
  Debugging: If the above steps do not resolve the issue, consider debugging the application to trace where the error is occurring. This may provide more insight into what is missing or misconfigured.
  
  
  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 problems.
  Documentation: Review the official SAP documentation for the Field Definition Tool and related components to ensure that you are following best practices for defining fields and data types.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues. They may provide additional insights or solutions.
  
  By following these steps, you should be able to identify and resolve the cause of the FDT_CORE039 error in your SAP environment.