SAP Message WB2B_TEW050 - Error in Customizing for action classes

Diagnosis
A Customizing error occurred.

System Response
The function is terminated.

Procedure
INCLUDE ISR_VERWALTUNG

Procedure for System Administration
In Customizing, action class &v1& was entered, but this does not existin the system. Ensure that a typing error was not madeDefine Action Class.