Is there an available list of fields that we can use for parameters in the CMDB API?

I'm trying to achieve an output of a particular CI Type that currently have Asset State set to 'In Store'. However, I get an error that 'Asset State' is an invalid field name. Can someone provide some input?

Here's the output response:

{"API":{"version":"1.0","response":{"operation":{"name":"read","result":{"statuscode":"3025","status":"Invalid column(s) specified.","message":"Invalid field name \'Asset State\' specified."}}}}}