How To Fix CLB023 - The application key can be set only once

CLB023 - Overview

• Message type: E = Error

• Message class: CLB - SAIL: Common messages

• Message number: 023

• Message text: The application key can be set only once

What causes this issue?

Some methods need a so called application key for identifcation purposes
and for accessing the customizing. This key must be set just once at
initialization time. A second attempt is treated as error.

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

System Response

The method in progress will be cancelled.

How to fix this error?

This error can be solved by a code change only.

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 CLB023 - The application key can be set only once ?

  The SAP error message CLB023 ("The application key can be set only once") typically occurs in the context of SAP's Classification System or when dealing with application keys in the SAP system. This error indicates that an attempt is being made to set an application key that has already been set for a particular object or instance.
  
  Cause:
  
  Duplicate Setting: The most common cause of this error is that the application key is being set multiple times for the same object. In SAP, application keys are designed to be unique identifiers for specific applications or functionalities, and they can only be assigned once to an object.
  Incorrect Logic in Custom Code: If there is custom ABAP code or enhancements that manipulate application keys, there may be logic errors that attempt to set the key again.
  Data Consistency Issues: There may be inconsistencies in the data or configuration that lead to the system trying to