How To Fix AQ408 - Key fields are not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: AQ - Message texts for SAP Query

• Message number: 408

• Message text: Key fields are not allowed

What causes this issue?

You cannot use key fields from functional areas of the Human Resources
(HR) application in statistics and ranked lists.

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 AQ408 - Key fields are not allowed ?

  The SAP error message AQ408 ("Key fields are not allowed") typically occurs when you are trying to create or modify a data record in a table or structure that has key fields defined, but the operation you are attempting does not allow for those key fields to be included in the way you are trying to use them.
  Cause:
  
  Key Field Restrictions: The error usually arises when you attempt to insert or update a record in a way that violates the constraints of the key fields. For example, you might be trying to set a key field to a value that is not allowed or trying to use a key field in a context where it is not permitted.
  Incorrect Data Entry: If you are entering data manually, it could be that the key fields are being populated incorrectly or are being left blank when they should not be.
  Program Logic: If this error occurs in a custom program or report, it may be due to incorrect logic in the code that handles the key fields.
  
  Solution:
  
  Check Key Field Definitions: Review the table or structure definition to understand which fields are designated as key fields. Ensure that you are not trying to modify these fields inappropriately.
  Data Entry Validation: If you are entering data manually, double-check that you are providing valid values for all required key fields and that they are not left blank.
  Review Custom Code: If the error is occurring in a custom program, review the code to ensure that it correctly handles key fields. Make sure that any operations involving key fields are compliant with the table's constraints.
  Consult Documentation: Refer to SAP documentation or help resources for the specific transaction or table you are working with to understand the rules regarding key fields.
  Debugging: If you have access to debugging tools, you can set breakpoints in the relevant code to see what values are being passed to the key fields and identify where the error is occurring.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific transaction or table you are working with.
  Transaction Codes: If you are using a specific transaction code, look for any related configuration settings that might affect how key fields are handled.
  Community Forums: Consider searching or posting in SAP community forums for additional insights from other users who may have encountered the same issue.
  
  If the problem persists after trying these solutions, it may be beneficial to reach out to your SAP support team or consult with an SAP expert for further assistance.