How To Fix FDT_EXPRESSIONS646 - Selection based on amount and quantity types are not supported

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 646

• Message text: Selection based on amount and quantity types are not supported

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS646 - Selection based on amount and quantity types are not supported ?

  The SAP error message FDT_EXPRESSIONS646 indicates that there is an issue with the selection criteria in a financial document or report where both amount and quantity types are being used together in a way that is not supported. This typically occurs in the context of financial data processing, especially when using the Financial Data Management (FDM) tools or similar functionalities in SAP.
  Cause:
  The error arises when a selection is made that combines both amount and quantity types in a manner that the system does not support. This can happen in various scenarios, such as:
  
  Incompatible Data Types: Attempting to filter or select data using both monetary values (amounts) and physical quantities (like units of measure) in a single expression or condition.
  Configuration Issues: The configuration of the financial document or report may not allow for mixed-type selections.
  Custom Logic: If there is custom logic or expressions defined in the system that incorrectly combine these types.
  
  Solution:
  To resolve this error, consider the following steps:
  
  
  Review Selection Criteria: Check the selection criteria you are using. Ensure that you are not mixing amount and quantity types in a single selection. Separate the logic for amount-based selections and quantity-based selections.
  
  
  Modify Expressions: If you are using custom expressions or logic, modify them to ensure that they only use one type (either amount or quantity) at a time.
  
  
  Check Configuration: Review the configuration settings for the financial document or report. Ensure that it is set up to handle the types of data you are working with.
  
  
  Consult Documentation: Refer to SAP documentation or help resources related to the specific module you are working with. This can provide insights into supported operations and configurations.
  
  
  Testing: After making changes, test the selection again to ensure that the error is resolved.
  
  
  Seek Support: If the issue persists, consider reaching out to SAP support or your internal SAP team for further assistance. They may have additional insights or solutions based on your specific system configuration.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can share their solutions.
  Documentation: Review the official SAP documentation for the Financial Data Management module or the specific transaction you are working with for best practices and guidelines.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.