How To Fix KX373 - Constant cannot be assigned to field &

SAP Error Message - Details

• Message type: E = Error

• Message class: KX - EC-EIS/EC-BP: Data basis, data collection

• Message number: 373

• Message text: Constant cannot be assigned to field &

What causes this issue?

No constants can be assigned to this field because of the data type, the
field length, the assigned domain or because of the referencing of
another field.
Fields with domains (to be regenerated) and check tables cannot, in
general, have constants assigned to them, as the field can simply be
left out in this case.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KX373 - Constant cannot be assigned to field & ?

  The SAP error message KX373, which states "Constant cannot be assigned to field &," typically occurs in the context of SAP ABAP programming or when working with certain configurations in SAP modules like Controlling (CO). This error indicates that there is an attempt to assign a constant value to a field that does not accept it, often due to data type mismatches or incorrect field definitions.
  Causes:
  
  Data Type Mismatch: The constant being assigned does not match the expected data type of the field. For example, trying to assign a string to a numeric field.
  Field Definition Issues: The field may not be defined to accept constants or may have restrictions on the values it can take.
  Incorrect Syntax: There may be a syntax error in the code where the assignment is being made.
  Contextual Restrictions: The field may be in a context where it cannot accept a constant value, such as during certain operations or in specific function modules.
  
  Solutions:
  
  Check Data Types: Ensure that the constant you are trying to assign matches the data type of the field. You can use the ABAP Data Dictionary (SE11) to check the field's data type.
  Modify the Assignment: If the constant is not appropriate, consider using a variable that holds the value instead of a constant, or convert the constant to the appropriate type before assignment.
  Review Field Definition: Check the field's definition in the relevant table or structure to ensure it is designed to accept the value you are trying to assign.
  Debugging: Use the ABAP debugger to step through the code and identify where the error occurs. This can help you understand the context and the values being used.
  Consult Documentation: Review SAP documentation or help resources related to the specific module or function you are working with to understand any constraints or requirements.
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like SE80 (Object Navigator) or SE37 (Function Module) to explore the code and function modules related to the error.
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message KX373.
  Community Forums: Consider searching or posting in SAP community forums or platforms like SAP Community, Stack Overflow, or SAP Answers for additional insights from other users who may have encountered the same issue.
  
  By following these steps, you should be able to identify the cause of the KX373 error and implement a suitable solution.