"Invalid value passed for JSONString" exception while creating customer contact in Zoho Books using rest API

"Invalid value passed for JSONString" exception while creating customer contact in Zoho Books using rest API

Hi Experts,

 

We are using .Net c# code to create a customer contact in Zoho books using Zoho books Rest API.But we are getting "Invalid value passed for JSONString" exception.

Please find the attached sample code screenshot "Customer_Contact2.png" for your reference.,

 

Could you please let us know how to pass the JSONString.

It would be a great help if someone provide a sample code for creating the customer.

 

Thanks in Advance.

 

Regards

Amit