Zoho People Post API using Postman Error 400 Bad Request

Zoho People Post API using Postman Error 400 Bad Request

I'm trying to update 5000 project names via API in Zoho People using Postman. When I try using JSON I get at HTTP Status 400 - Bad Request error. I suspect I'm not correctly authenticating.

Post: https://people.zoho.com/people/api/forms/json/P_TimesheetJobsList/updateRecord?recordId=XXXXXXXXXXXXXXXXX&inputData={"Project_Name":"Website Designing"}

Authentication Tab under Headers:

Authentication Tab:


In the developer console I'm using Server Based Application:

Using the below parameters:

Which generate the client ID and client secret:
            Zoho Marketing Automation
                      • Sticky Posts

                      • Meet the Zoho People experts in your city!

                        Dear users,   We are delighted to invite you to the Zoho People's user community meetup. We are stoked to visit our users in their cities and help them with all things Zoho People.   Join us for a day of insightful Zoho sessions, interactions with other

                      Zoho Pagesense Resources

                        Zoho SalesIQ Resources

                              Zoho TeamInbox Resources

                                Zoho DataPrep Resources

                                  Zoho CRM Plus Resources

                                    Zoho Books Resources

                                      Zoho Subscriptions Resources

                                        Zoho Desk Resources

                                          Zoho Projects Resources

                                            Zoho Sprints Resources

                                              Qntrl Resources

                                                Zoho Creator Resources

                                                  Zoho WorkDrive Resources

                                                    Zoho Campaigns Resources

                                                      Zoho CRM Resources

                                                            Design. Discuss. Deliver.

                                                            Create visually engaging stories with Zoho Show.

                                                            Get Started Now