Please Follow the steps shown below to create Eway bill API id and password :
Step 1 : Go to Eway bill official website and login into your account then click on registration then click on for GSP
Step 2 : Now click on Send OTP and enter OTP received on your mobile number or Email address
Step 3 : Now follow the steps shown in image to create ID and password and make sure you are selecting “Charted information systems Private Limited” in GSP name
Step 4 : Now you need to add API id and password in your GoGSTBill account by going into settings from user menu
Step 5 : Now click on E-way bill & E-Invoice, there you will get an option to add E-way API User ID and E-way API Password.