What is the exact meaning of t1quanitity in the holding response?

[Mr Depp]

Hello team,

I m calling getHolding() method and get the response as well.
Now I have confusion about the quantity in in the response. there are two kind of quantity are there first one is quantity and another one is t1quantity. What does it mean ?

so can any one please clear the term and difference between the quantity and t1 quantity and which quantity should I consider to exit the trade ?

Thanks.