How To Fix FDT_EXPRESSIONS108 - Incompatible result assigned to leaf &1

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_EXPRESSIONS - Formula & Derivation Tool: Expressions

• Message number: 108

• Message text: Incompatible result assigned to leaf &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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS108 - Incompatible result assigned to leaf &1 ?

  The SAP error message FDT_EXPRESSIONS108 ("Incompatible result assigned to leaf &1") typically occurs in the context of SAP's Flexible Data Import (FDI) or Flexible Data Transformation (FDT) framework. This error indicates that there is a type mismatch between the expected data type of a leaf node in a data structure and the actual data being assigned to it.
  Cause:
  The error is caused by an attempt to assign a value to a data structure (leaf node) that does not match the expected data type. For example, if a leaf node is defined to accept only numeric values, but a string or a different data type is being assigned, this error will be triggered.
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Data Types: Review the data structure definition for the leaf node indicated by &1 in the error message. Ensure that the data type of the value being assigned matches the expected data type.
  
  
  Data Mapping: If you are using a mapping or transformation logic, verify that the mapping correctly converts the data types. You may need to add type conversion logic to ensure compatibility.
  
  
  Debugging: If you are unsure where the mismatch is occurring, you can enable debugging or logging to trace the data flow and identify where the incompatible assignment is happening.
  
  
  Review Input Data: Check the input data being processed. Ensure that the data being fed into the transformation or import process adheres to the expected formats and types.
  
  
  Adjust Configuration: If necessary, adjust the configuration of the data structure or transformation to accommodate the data types being used.
  
  
  Related Information:
  
  Documentation: Refer to the SAP documentation for FDT and FDI for detailed information on data types and structures.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  Community Forums: Engage with SAP community forums or support channels where similar issues may have been discussed.
  
  By following these steps, you should be able to identify and resolve the cause of the FDT_EXPRESSIONS108 error in your SAP environment.