Budget Check Travel request

Hi,

I have a doubt on Travel Request and FM Integration.

1. Estimated Cost Wage Type maintained in TRIP.

2. Wage Type is assigned to a GL.

3. We have Different  Trip Activity and for each expenses different Gls are there. Like Domestic and International.

4. If we need Budget Check at Request level, then do we need to  Upload Budget on Estimated Cost wage Type GL..

5. Then at the time of expenses booking,. system calls another GL and Commitment based on the expenses types.

what i feel after testing.,we need to upload budget two times.. In Estimated Cost Wage Type GL and later respective Expenses Type GL  !!!!

I am confused..

Requirement is ;

1. Budget Check on Travel Request , based on Travel Activity. without any Duplication.

2. We have budget bifurcation for Travel Domestic, International, Study, Business Trip Etc..

Somebody can give some Light on this issue....

Thanks in advance

Shinas