Zoho Desk API: Contact ownerId should be optional?

Zoho Desk API: Contact ownerId should be optional?

Hi, according to the Zoho Desk API docs, when I create a Contact, the ownerId field should be optional:

https://desk.zoho.com/DeskAPIDocument#Contacts#Contacts_CreateContact

However, when I create a contact with "ownerId": null, I get the following 422 response:

{"errorCode":"INVALID_DATA","message":"The data is invalid due to validation restrictions","errors":[{"fieldName":"/ownerId","errorType":"invalid"}]}.

I think this only started happening today, because I'm fairly sure we have successfully created Contacts with a null ownerId before.

Is this a bug? Let me know if there's a better place to report this!

--Doug Orleans, developer at Wellist