How To Fix FDT_EXPRESSIONS645 - Amount and quantity types are not supported with single select

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 645

• Message text: Amount and quantity types are not supported with single select

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS645 - Amount and quantity types are not supported with single select ?

  The SAP error message FDT_EXPRESSIONS645 indicates that there is an issue with the use of amount and quantity types in a single select expression within the SAP system. This error typically arises when trying to perform operations or calculations involving amount or quantity fields in a context that does not support them, such as a single select statement.
  Cause:
  
  Incompatible Data Types: The error occurs because the system does not support the use of amount and quantity types in a single select expression. This is often due to the way the data types are defined in the system.
  Expression Context: The context in which the expression is being evaluated may not allow for the use of these specific data types.
  Configuration Issues: There may be configuration settings in the SAP system that restrict the use of certain data types in specific contexts.
  
  Solution:
  
  
  Change the Expression: Modify the expression to avoid using amount or quantity types in a single select. Instead, consider using a different approach, such as:
  
  Using a different type of expression that supports these data types.
  Breaking down the logic into multiple steps or using a different method to achieve the desired result.
  
  
  
  Use Aggregation: If applicable, consider using aggregation functions (like SUM, AVG) that can handle amount and quantity types, rather than trying to select them directly.
  
  
  Check Data Type Definitions: Review the definitions of the fields involved in the expression to ensure they are correctly defined and compatible with the operations being performed.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for guidance on how to handle amount and quantity types in expressions. This may provide insights into best practices or alternative methods.
  
  
  Seek Support: If the issue persists, consider reaching out to SAP support or consulting with a technical expert who can provide assistance based on the specific context of your implementation.
  
  
  Related Information:
  
  SAP Fiori and ABAP: If you are using SAP Fiori or ABAP, ensure that you are familiar with the data types and their compatibility within the context of your application.
  Data Dictionary: Check the Data Dictionary (SE11) for the definitions of the fields you are working with to understand their data types and constraints.
  SAP Notes: Look for relevant SAP Notes that may address this specific error or provide updates and patches that could resolve the issue.
  
  By following these steps, you should be able to resolve the FDT_EXPRESSIONS645 error and successfully work with amount and quantity types in your SAP environment.