Im sorry but I still don't get it..
My preflight planning indicated that in the absence of a published Transition Altitude (which I couldn't find from LFRK).. it was stated to use 3000'..
It was Deauville not Paris my apologies.
The instructions were to 'Climb initially to 2500 and contact Deauville'.
I had the French,Belgium and Lux chart 1:250k in front of me.. The base of the CAS started at 2500 on departure from LFRK after which I was told to contact Deauville.
Im still a tad confused as to what chart or reference I may have missed or where I slipped up..
Scoobster