Just in case anyone else has this issue.

We had a Zoho Flow with the Zoho Desk trigger "Ticket created or updated".

In the trigger I had selected a Department (Sales).

What happens is that the Department ID (Sales) is submitted as part of the request and in the response, it just returns the Department ID (Sales) which you sent - instead of the actual Department ID (Operations).

Even if you add a filter to filter for "Sales" - it passes this check because the response returned is Sales (even though it was actually Operations).

I thought I was going crazy until I realised Department is not mandatory and if you don't populate it - it doesn't cause this problem.