How To Fix FDT_EXPRESSIONS610 - Type of database field &1 does not match the type of return field &3

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 610

• Message text: Type of database field &1 does not match the type of return field &3

What causes this issue?

You have tried to associate the result data object field &v3& (type &V4&
) with field &V1& (type &V2&) that has been passed as expression
context. However, the type of the result data object field (&V4&) is not
compatible with the type of the underlying database field (&V2&).

System Response

The expression can be activated, but you must make sure that the type
mismatch that has been detected does not cause any problems at runtime.

How to fix this error?

Assign the result data object to a database field of the same data type.
The types do not have to be identical, but it must be possible for the
system to carry out a type conversion so that the types can be matched.
&example&
In the expression context, you use a table with a text type field. At
runtime, this field is mapped to a number field in another table that is
used as result data object. In this constellation, the system makes you
aware of the type mismatch. However, you can still decide that this is
OK as long as you can guarantee that the text field in the context data
object always contains a number.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS610 - Type of database field &1 does not match the type of return field &3 ?

  The SAP error message FDT_EXPRESSIONS610 indicates a type mismatch between a database field and a return field in a function or expression. This typically occurs in the context of using the SAP Field Data Tool (FDT) or when working with expressions in ABAP or other SAP-related configurations.
  Cause:
  The error arises when:
  
  The data type of the database field (e.g., CHAR, NUMC, DATS) does not match the expected data type of the return field.
  There may be an attempt to assign or return a value from a database field to a variable or field that has a different data type.
  This can happen in custom developments, data mapping, or when using expressions in FDT.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Data Types:
  
  Verify the data type of the database field (&1) and the return field (&3). Ensure that they are compatible.
  You can do this by checking the data dictionary (SE11) for the relevant table and field definitions.
  
  
  
  Adjust Field Types:
  
  If the types do not match, consider changing the type of the return field to match the database field or vice versa, depending on the business logic and requirements.
  If you are using expressions, ensure that the expression is correctly defined to handle the data types.
  
  
  
  Use Type Conversion:
  
  If changing the field types is not feasible, you may need to implement type conversion. For example, if you are trying to assign a numeric value to a character field, you can convert the numeric value to a string format before assignment.
  
  
  
  Review Expression Logic:
  
  If the error occurs in an expression, review the logic to ensure that all fields and variables used in the expression are of compatible types.
  
  
  
  Testing:
  
  After making the necessary adjustments, test the changes to ensure that the error is resolved and that the functionality works as expected.
  
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like SE11 (Data Dictionary), SE80 (Object Navigator), or SE37 (Function Module) to investigate the definitions of the fields involved.
  Documentation: Refer to SAP documentation or help resources for more information on data types and field definitions.
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide additional guidance on this error.
  
  By following these steps, you should be able to identify the cause of the error and implement a suitable solution.