Zoho Desk - The value passed for the 'contactid' parameter is invalid

Zoho Desk - The value passed for the 'contactid' parameter is invalid

I have retrieved the contact id from the /api/v1/contacts API, but when I use the value of the id when creating a ticket the I get the response

{"message":"The value passed for the 'contactid' parameter is invalid."}

This data is required and it is a Long.  I am providing it, but am a loss as to in what way it is invalid.
Any ideas?

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