How To Fix FDT_EXPRESSIONS644 - Amount and quantity types are not supported with field mapping

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 644

• Message text: Amount and quantity types are not supported with field mapping

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS644 - Amount and quantity types are not supported with field mapping ?

  The SAP error message FDT_EXPRESSIONS644 indicates that there is an issue with the field mapping in your SAP system, specifically related to the use of amount and quantity types. This error typically arises when you are trying to map fields that are not compatible with each other in terms of their data types.
  Cause:
  
  Incompatible Data Types: The error occurs when you attempt to map fields that have different data types, such as trying to map an amount field (e.g., currency) to a quantity field (e.g., units of measure).
  Field Mapping Configuration: The configuration of the field mapping may not support the combination of the selected fields, leading to this error.
  Expression Evaluation: If you are using expressions in your mapping, the expression may be trying to evaluate or manipulate incompatible types.
  
  Solution:
  
  Check Field Types: Review the data types of the fields you are trying to map. Ensure that you are mapping compatible types (e.g., amount to amount, quantity to quantity).
  Adjust Mapping Logic: If you need to perform calculations or transformations, consider using appropriate conversion functions or logic to ensure that the data types match before mapping.
  Modify Expressions: If you are using expressions, ensure that they are correctly defined and that they handle the data types appropriately. You may need to cast or convert data types as necessary.
  Consult Documentation: Refer to SAP documentation or help resources for guidance on field mapping and supported data types in your specific context.
  Testing: After making changes, test the mapping to ensure that the error is resolved and that the data is processed correctly.
  
  Related Information:
  
  SAP FDT (Flexible Data Transfer): This is a framework in SAP that allows for flexible data mapping and transformation. Understanding how FDT works can help in troubleshooting mapping issues.
  Data Type Compatibility: Familiarize yourself with the data types used in your SAP system, especially those related to financial and quantity fields.
  SAP Community and Support: If the issue persists, consider reaching out to the SAP Community or SAP Support for further assistance. They may have encountered similar issues and can provide insights or solutions.
  
  By following these steps, you should be able to resolve the FDT_EXPRESSIONS644 error and successfully configure your field mappings.