Get Associated Records - Zoho Recruit API

Get Associated Records - Zoho Recruit API

Hey Zoho... 

so having problems with the following API

Get Associated Records...

https://recruit.zoho.com/recruit/v2/{module_api_name}/{record_id}/associate

From my understanding, it can get both the candidates associated with a job opening and the job openings associated with a candidate.

When i run https://recruit.zoho.com/recruit/v2/Candidates/{job_id}/associate it works fine.
When i run https://recruit.zoho.com/recruit/v2/JobOpenings{candidate_id}/associate i get the following response:

{
    "code""INVALID_DATA",
    "details": {},
    "message""the relation name given seems to be invalid",
    "status""error"
}

Any ideas why?

Thanks
Tom