How To Fix OQ_E397 - You cannot delete the entire matchkey. Re-select fields to be excluded.

OQ_E397 - Overview

• Message type: E = Error

• Message class: OQ_E - IS-Oil SSR : Message pool Payment Card Processing

• Message number: 397

• Message text: You cannot delete the entire matchkey. Re-select fields to be excluded.

What causes this issue?

You tried to delete all the fields in the matchkey. But in order for
matching to take place, there must be at least one field in the
matchkey.

System Response

The lines you selected for deletion were not deleted. The full
matchkey is displayed.

How to fix this error?

Select the lines you wish to delete, leaving at least one field in the
matchkey.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

OQ_E397 - Details

• The SAP error message OQ_E397, which states "You cannot delete the entire matchkey. Re-select fields to be excluded," typically occurs in the context of data matching or data processing within SAP systems, particularly in modules related to master data management or data quality.
  
  Cause:
  This error arises when a user attempts to delete or modify a match key in a way that would result in the complete removal of all fields associated with that match key. Match keys are used to identify and link records based on specific criteria, and removing all fields would eliminate the ability to match records effectively.
  
  Solution:
  To resolve this error, you should follow these steps:
  
  
  Review Match Key Configuration: Check the current configuration of the match key you are trying to modify. Ensure that you are not attempting to delete all fields associated with it.
  
  
  Select Fields to Exclude: Instead of trying to delete the entire match key, you should