SAP Message RH230 - You are using characters in the hierarchy name that are not alphanumeric

Diagnosis
You are using characters for the hierarchy name that only exist in theextended list of permitted characters for hierarchy names.

System Response
The processing continues.

Procedure
In order to ensure correct processing in reporting, we recommend onlyusing characters from the following list:
_0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ
If problems occur while processing the hierarchy in reporting, changethe hierarchy names so that only characters from the list above areused. It is sometimes advisable to rename the hierarchy whilst loading.This functionality is available in the hierarchy area of the scheduler.