How To Fix DMEE399 - Sort field &1 was not defined as a key field

SAP Error Message - Details

• Message type: E = Error

• Message class: DMEE - Messages for Data Medium Exchange Engine

• Message number: 399

• Message text: Sort field &1 was not defined as a key field

What causes this issue?

You use sort field &V1& as a key field without sorting, but you have not
set the <DS:DE.DMEE_KEY_FIELD>Key Field</> indicator. If <LS>No Sorting
</> is selected for a field, then it must also be defined as a key
field.

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?

Set the <LS>Key Field</> indicator for the sort field in question.

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 DMEE399 - Sort field &1 was not defined as a key field ?

  The SAP error message DMEE399 indicates that a sort field specified in the Data Medium Exchange Engine (DMEE) configuration is not defined as a key field. This typically occurs when you are trying to sort data in a way that is not supported by the current configuration of the DMEE tree structure.
  Cause:
  
  Incorrect Configuration: The sort field you are trying to use has not been defined as a key field in the DMEE tree structure.
  Missing Key Field Definition: The field you are attempting to sort by is not included in the key fields of the relevant node in the DMEE tree.
  Data Structure Issues: The data structure being processed may not align with the expected key fields defined in the DMEE configuration.
  
  Solution:
  
  
  Check DMEE Configuration:
  
  Go to the DMEE transaction (usually transaction code DMEE).
  Open the relevant DMEE tree structure that you are working with.
  Verify that the sort field you are trying to use is defined as a key field in the node where it is being referenced.
  
  
  
  Define the Sort Field as a Key Field:
  
  If the sort field is not defined as a key field, you will need to add it.
  Navigate to the node in the DMEE tree where the sort field should be defined.
  In the properties of that node, ensure that the field is included in the key fields section.
  
  
  
  Review Sorting Logic:
  
  Ensure that the sorting logic you are implementing is appropriate for the data structure and that it aligns with the key fields defined.
  
  
  
  Test the Configuration:
  
  After making changes, test the DMEE configuration to ensure that the error no longer occurs and that the output is as expected.
  
  
  
  Related Information:
  
  DMEE Documentation: Refer to SAP documentation for detailed information on configuring DMEE trees and understanding key fields.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues or provide additional guidance related to DMEE configurations.
  Community Forums: Engage with SAP community forums or support channels for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the DMEE399 error and ensure that your DMEE configuration is set up correctly for sorting data.