Which doc are you referencing?
May be best to ask Support directly.
I am able to query Campaigns without a value for isTriggerable. What is making you think it's mandatory? Are you getting an error code (and if so, which one)?
Thanks a lot for your responses. I re-tested in again from a different client and it gave the results successfully without specifying the isTriggerable parameter. I was trying it out using JMeter, passing them as query parameters and it fails for some reason. Thanks a lot for your time and sorry about the noise.