Invalid Value Passed in customer_name API

Invalid Value Passed in customer_name API

Hello,
I am trying to send data from zoho creator to zoho books, while doing that it throws me an error

{"code":4,"message":"Invalid value passed for Customer Name"}

This is the code:

  2. void BooksIntegration()
  3. {
  4. mapp = Map();
  5. mapp.put("contact_name","Bhavik");
  6. dataa = Map();
  7. dataa.put("data",mapp);
  8. head = Map();
  9. head.put("Authorization","Zoho-oauthtoken 1000.xxxx " );
  10. addRecords = invokeurl
  11. [
  12. url :"https://books.zoho.in/api/v3/contacts?organization_id=60002432254"
  13. type :POST
  14. parameters:dataa.tostring()
  15. headers:head
  16. ];
  17. info addRecords;

  19. }