How To Fix FDT_CORE790 - ID &1 is not of type expression

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 790

• Message text: ID &1 is not of type expression

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_CORE790 - ID &1 is not of type expression ?

  The SAP error message FDT_CORE790 with the description "ID &1 is not of type expression" typically occurs in the context of SAP's Flexible Data Import (FDI) or Flexible Data Transfer (FDT) framework. This error indicates that the system is expecting an expression type for a specific ID, but it has received a different type.
  Cause:
  
  Incorrect Data Type: The ID referenced in the error message is expected to be of a specific type (e.g., an expression), but it is not. This could be due to a misconfiguration in the data model or an incorrect mapping in the FDT configuration.
  Configuration Issues: There may be issues in the configuration of the FDT or FDI where the data types are not correctly defined or aligned with the expected types.
  Data Source Issues: The data being imported or processed may not conform to the expected structure or type, leading to this error.
  
  Solution:
  
  Check Configuration: Review the configuration settings for the FDT or FDI. Ensure that the ID in question is correctly defined as an expression type in the relevant data model or mapping.
  Validate Data Types: Ensure that the data types of the fields being processed match the expected types in the FDT configuration. If necessary, adjust the data types in the source data or the FDT configuration.
  Review Mappings: If you are using mappings, check that the mappings are correctly set up and that the ID is mapped to the correct expression type.
  Debugging: If the issue persists, consider enabling debugging or logging to get more detailed information about where the error is occurring. This can help identify the specific configuration or data issue.
  Consult Documentation: Refer to SAP documentation or help resources related to FDT and FDI for more specific guidance on handling data types and expressions.
  
  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 to common problems.
  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 cannot be resolved through the above steps, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error, including the context in which it occurs.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.