Reject Agreement for a Single Participant

Hi team,

We are trying to use Adobe Sign API in our application. We are facing an issue while using the Reject Agreement API. From the API documentation  it seems like we need to provide the Agreement ID , Participant Set ID and the Participant ID for whom the agreement needs to be rejected/cancelled. But in our case, the agreement gets cancelled for all the participants.

Is there any other options/parameters need to be added to the request to achieve the agreement rejection for a single participant alone or it is the expected behaviour of the API?

Thanks,

Naveen.