Step 1: Create a connection for Google Calendar 

1. Navigate to Setup > Developer Space > Connections and click Create Connection.
   
   
   
   
2. Under the Default Services tab, select Google Calendar.
   
   
   
   
3. Do the following and click Create And Connect.
   - Enter the Connection Name as Google Calendar. The Connection Link Name will be automatically populated.
   - Disable Use Credentials Of Login User. If this is disabled, the connection will utilize the credentials of the connection owner.
   - Select all the Scopes.
   
   
   
   
4. Click Connect in the authentication page.
   
   
   
   
5. Click Connect in the Authorization page.
   
   
   
   
6. Choose an account.
   
   
   
   
7. Click Allow in the Authorization page.
   
   
   
   
8. In the custom function, where the Google Calendar API is used via the invokeURL task, use this Connection Link Name.
   
   
   

Step 2: Create a custom function  

1. Navigate to Setup > Automation > Functions and click Create Function.
   
   
   
   
2. Enter the following details and click Save:
   
1. Function Name: CreateEventInGoogleCalendar
   
2. Module: Service Appointments
   
3. In the Deluge Script Editor, enter the following script:
   
   

   service_appointment_id = service_appointment.get("id"); resp = zoho.fsm.getRecordById("Service_Appointments",service_appointment_id); resp_data = resp.get("data").toMap(); Scheduled_End_Date_Time = resp_data.get("Scheduled_End_Date_Time"); Scheduled_Start_Date_Time = resp_data.get("Scheduled_Start_Date_Time"); Summary = resp_data.get("Summary") + " (Zoho FSM)"; description = "https://fsm.zoho.com/home#/tab/Service_Appointments/" + service_appointment_id; Service_Address_Map = resp_data.get("Service_Address").toMap(); street = Service_Address_Map.get("Service_Street_1"); city = Service_Address_Map.get("Service_City"); state = Service_Address_Map.get("Service_State"); zip = Service_Address_Map.get("Service_Zip_Code"); country = Service_Address_Map.get("Service_Country"); location = street + ", " + city + ", " + state + " " + zip + ", " + country; Contact_Id = resp_data.get("Contact").toMap().get("id"); Contact_resp = zoho.fsm.getRecordById("Contacts",Contact_Id); Contact_resp_data = Contact_resp.get("data").toMap(); con_email = Contact_resp_data.get("Email"); emailMap = Map(); emailMap.put("email",con_email); emailList = list(); emailList.add(emailMap); startMap = Map(); startMap.put("dateTime",Scheduled_Start_Date_Time); endMap = Map(); endMap.put("dateTime",Scheduled_End_Date_Time); bodyMap = Map(); bodyMap.put("end",endMap); bodyMap.put("start",startMap); bodyMap.put("description",description); bodyMap.put("eventType","default"); bodyMap.put("summary",Summary); bodyMap.put("attendees",emailList); bodyMap.put("location",location); response = invokeurl [  url :"https://www.googleapis.com/calendar/v3/calendars/{calendarId}/events"  type :POST  parameters:bodyMap.toString()  connection:"googlecalendar" ]; info response;

Step 3: Create a workflow rule  

1. Navigate to Setup > Automation > Workflow Rules and click Create Workflow.
   
2. Enter the following details, then click Next:
   
1. Module: Service Appointments
   
2. Rule Name: Create Event in Google Calendar
   
3. Description: Create an event in Google Calendar when a new service appointment is created
   
   
   
   
3. Select the rule trigger as Created and click Next.
   
   
   
   
4. Select the rule criteria as To all Service Appointments. Click Next.
   
   
   
   
5. Click +Action and select Function.
   
   
   
   
6. Select Existing Functions and click Next.
   
   
   
   
7. Select the function created in the previous step.
   
   
   
   
8. Click Save.
   
   

Testing the use case