How To Fix 0K537 - The field & must be flagged as technical in the field catalog

0K537 - Overview

• Message type: E = Error

• Message class: 0K - Messages for "General List Modules"

• Message number: 537

• Message text: The field & must be flagged as technical in the field catalog

What causes this issue?

The field catalog entries for Checkboxes and Exceptions must be flagged
TECH = 'X'.
The caller need not enter these fields explicitly in the field catalog.
It suffices to make the appropriate layout entries. The field catalog
is augmented automatically when the ABAP List Viewer is called.

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.

0K537 - Details

• The SAP error message 0K537 indicates that a specific field in your report or query is not flagged as a technical field in the field catalog. This typically occurs in the context of SAP BW (Business Warehouse) or SAP Query, where certain fields need to be designated as technical to ensure proper functionality and data handling.
  
  Cause:
  The error arises when:
  
  A field that is expected to be treated as a technical field (e.g., a key field or a field that is used for internal processing) is not marked as such in the field catalog.
  The field is being used in a context where it is required to be flagged as technical, such as in a query or report that processes data in a specific way.
  
  
  Solution:
  To resolve the error, you need to ensure that the field in question is correctly flagged as a technical field in the field catalog. Here are the steps to