Hierarchy level for LV_CAT not found in Customizing

Hi Experts,

I am new to SAP DBM. I did the necessary configurations required for Labor Values.

While creating a service order for Vehicle, I entered the Labor value that time i am getting an error like

"Hierarchy level for LV_CAT not found in Customizing"

Message no. /DBM/COMMON628

But I have Maintained the Hierarchy level in /DBM/LBROPGRP transaction code, as mentioned below.

LV_CAT      1         Labor value for electric works      1

LV_CAT      12       LUBRICATION                             1

And also i created Labor values in /DBM/LBROP. Can any one tell me what is the use of /DBM/LBROPGRP transtion code. Its hard to understand.

Please help me in resolving the issue. I will reward the points accordingly.

Thanks in advance

Nagaprasad Reddy.