Unable to fetch ticket by custom field value

Unable to fetch ticket by custom field value

I'm trying to set up a Flow to fetch a ticket based on a custom field value. This seems like it should be pretty straightforward, but it's not working for me. I keep getting an error saying Zoho Desk says "Extra query parameter 'cf_creator_record_id' is present in the input."

I'm not finding very good documentation on how to do this correctly, so it's also possible I have something wrong. Here's what I have in my Fetch Desk Ticket step:


The value I'm searching with comes from the Record ID value in the trigger. Then, the custom field to search by is currently set to cf_creator_record_id, which is the API name of the field I want to search in according to my Desk settings (Settings > Customization > Layouts and Fields > Fields List):


I tried changing the Custom Value for Search by to the field name rather than the API name, but that didn't work either. I tried changing it to ${cf_creator_record_id} thinking that might work, which it didn't. I do see the actual value coming in, but it seems like the field name is the problem every time. Here's what I see in the Flow details after it fails:


Search value is the value I want to search by, and Search by is the field I want to search in. Yet, it still produces that error. What am I missing here?