Returns a boolean flag or flags to indicate, respectively, if an input attribute or attributes exist for a session.
If only the very existence of attributes needs to be checked, it is faster and less resource-extensive to invoke this endpoint than using get.
While the call's Python equivalent has two versions, one for individual and the other for multiple attributes, with REST there is a single endpoint to cover both cases. Yet, just like in the Python call, it is more efficient to check multiple attributes in one REST call instead of repeatedly checking multiple attributes.
|current_ust||string||---||Current user's session token (UST)|
|target_ust||string||---||Target session's UST, the one that is being accessed (may be the same as current_ust)|
|current_app||string||---||Name of application that the call is attempted from|
|name||string||Yes||If a single attribute is to be checked, the attribute's name|
|data||list||Yes||If multiple attributes are to be checked, this is a list of their names|
|cid||string||---||Correlation ID assigned to request|
|status||string||---||Overall status code|
|sub_status||list||Yes||Returned only if status is not "ok", a list of error or warning codes|
|result||bool/list||---||If a single attribute was requested, a boolean flag to express if that attribute exists or not. With multiple attributes, a list of dictionaries with flags, one for each input attribute name.|