Can anyone help me with API Limits in Zoho.

I am trying to fetch a Lead record data into a form,it is retrieving only first time for one lead record only.

If i try for second record it throwing me below error.

" Error Executing the Workflow,On Add- On Validate Script"

The maximum no.of Zoho API calls per day reached ."

i am using Free trail of Zoho creator.

Thanks,

Neha