From what I can see, the responses from the API have changed recently. The following example should illustrate.

If I make a request to the api that does not validate I get the usual response see:

curl --data "authtoken=<yourtokenhere>&scope=creatorapi&First_Name=test&Last_Name=test&Email=test@test.com&Mobile_Phone=1234567890" https://creator.zoho.com/api/zoho_beth3/json/talent/form/Appointment/record/add/

response:

{"formname":["Appointment",{"operation":["add",{"values":{"Email":"test@test.com","Last_Name":"test","First_Name":"test","Mobile_Phone":"1234567890"},"status":"Failure, Mobile Phone Number invalid"}]}]}

If I make a request with valid data I get an empty response:

curl --data "authtoken=<yourtokenhere>&scope=creatorapi&First_Name=test&Last_Name=test&Email=test@test.com&Mobile_Phone=0434567890" https://creator.zoho.com/api/zoho_beth3/json/talent/form/Appointment/record/add/

response:

""

As a workaround I will reprogram my application to accept an empty response as a successful one. Please let me know when this is fixed.

Regards,

Ben Sudbury