It does not specify a type of deal.
It can also specify the volume of the last deal.
||Volume of the last deal
Or it can specify the min and max volume of the position you can take on.
||Minimal volume for a deal
||Maximal volume for a deal
||Minimal volume change step for deal execution
||Maximum allowed aggregate volume of an open position and pending orders in one direction (buy or sell) for the symbol. For example, with the limitation of 5 lots, you can have an open buy position with the volume of 5 lots and place a pending order Sell Limit with the volume of 5 lots. But in this case you cannot place a Buy Limit pending order (since the total volume in one direction will exceed the limitation) or place Sell Limit with the volume more than 5 lots.
I’m still not sure what you mean though.