Message SAP WS453 - An internal error occurred

Diagnosis
An internal error occurred.

System Response
INCLUDE ISR_STOP OBJECT DOKU ID TX

Procedure
INCLUDE ISR_VERWALTUNG

Procedure for System Administration
Profit group &V1& is not defined in Customizing. Check the Customizingsetting for profit groups.
The error relates to function module "wlf_get_profit_cust".