SAP Note 17043 - Creating authorization object is not possible

Symptom:

When trying to create an authorization object using transactions KE17, KE37, KCR7, you get message KH705 with the text (2.1, 2.2):
The authorization object does not exist (please choose another).
In 3.0, the error message has the text: Authorization object is being used by another application or client.

Cause and prerequisites

The authorization object does exist, but it cannot be changed here because it is already being used in another application, or it was created in the current application for a different client.
Possible applications are: CO-PA Planning, CO-PA Reporting, CO-BPC Reporting.

Solution
You can access an overview of the use of authorization objects per application by displaying table TKEB3 using transaction SE16.
The entries are divided according to application class and subclass.
Application class KE: Objects for CO-PA, Subclass 01 - reporting, 02 - planning.
Application class KC: Objects for CO-BPC.
In addition, all applications are divided according to table name. In this case, in application class KE the table name in the last 4 characters corresponds to the operating concern, and in KC the last 3 characters correspond to the aspect.
You can use the authorization object in a different client for the authorization check if you transport the corresponding entry from table TKEB3 into the other client.