Acronym Questions for Titles listed on Pedigree - Page 1

I dont understand all of these acronyms. Will someone help me with this?
TT, CH MEX, CH CAN, CH SAL, CH CR, GCC, Multi BISS

The name of the dog is "Sirroco's Sing it to me"

I'm thinking the following for some
CH MEX- Champion Mexico
CH CAN- Champion Canada
CH CR- Champion Costa Rica

Dont know the following:
TT
CH SAL
GCC
Multi BISS

Thanks,
Rick

These mean

TT Temperament Test

Multi BISS Best in Specialty Show

As far as I know,
CH SAL - in incorrect. They may be meaning El Salvador, but that would be CH SLV
GCC - is probably another misspelling and they mean CGC - Canine good citizen
But it is hard to tell. I sent the member a PM asking them what is their meaning, Hopefully, I will hear back from them.

thank you to all. It all makes sense