How To Fix FDT_EXPRESSIONS677 - Quantity unit for field &1 is different from the reference field &2

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 677

• Message text: Quantity unit for field &1 is different from the reference field &2

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_EXPRESSIONS677 - Quantity unit for field &1 is different from the reference field &2 ?

  The SAP error message FDT_EXPRESSIONS677 indicates that there is a mismatch in the quantity units between two fields in your data model or configuration. Specifically, it states that the quantity unit for the field specified as &1 is different from the reference field specified as &2. This typically occurs in scenarios involving data transformation, data mapping, or when working with expressions in SAP applications.
  Cause:
  
  Mismatched Units: The most common cause of this error is that the two fields being compared or used in an expression have different units of measure (UoM). For example, one field might be in kilograms while the other is in grams.
  Configuration Issues: There may be a configuration issue in the data model or in the way the fields are defined in the system.
  Data Type Mismatch: The fields may have different data types or formats that are not compatible with each other.
  
  Solution:
  
  Check Field Definitions: Review the definitions of both fields (&1 and &2) to ensure that they are using the same unit of measure. If they are supposed to represent the same quantity, they should have the same UoM.
  Adjust Data Mapping: If you are using a data mapping or transformation process, ensure that the mapping correctly converts the units from one field to another if they are intended to be different.
  Modify Expressions: If the error arises from an expression, modify the expression to ensure that both fields are compatible. You may need to convert one of the fields to match the unit of the other.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on handling unit conversions and data mapping in your particular context.
  Testing: After making changes, test the configuration or data transformation to ensure that the error is resolved.
  
  Related Information:
  
  Unit of Measure (UoM): In SAP, units of measure are critical for ensuring that quantities are correctly interpreted and processed. Familiarize yourself with how UoM is defined and used in your specific SAP module.
  Data Transformation Tools: If you are using tools like SAP Data Services or SAP HANA, check their documentation for handling unit conversions and data type compatibility.
  SAP Notes: Search for relevant SAP Notes that may address this specific error or provide additional context on similar issues.
  
  If the problem persists after checking these areas, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.