SandBox Webhook - Go to: https://www.twilio.com/console/sms/whatsapp/sandbox
Under the input box “WHEN A MESSAGE COMES IN” insert link to your webhook, it should look like this “https://{your-flow-name}.tekos.co/api/v1/whatsapp”.
Also save the number bellow for future usage.
For production ready Twilio Messaging Service SID - Go to https://www.twilio.com/console/sms/services, and follow the steps to create messaging service.
In the Properties tab you will find the SID.
Properties Tab In Twilio Messaging Service
Production Ready Webhook - For Messaging Service Webhook go to your created messaging service
https://www.twilio.com/console/sms/services under the Integration Tab.
Select "Send a webhook"
In "Request URL" enter link to your webhook, it should look like this “https://{your-flow-name}.tekos.co/api/v1/whatsapp”