Step 4 :- Click “New app” to register, then fill in all the required details to proceed and obtain your API credentials.
Please Note: Here, you can set both the “Redirect URL” and “Company or application URL” to be the same. To add the Redirect URL, copy the Callback URL from Salesforce during the authentication process and paste it into the “Company or application URL” and “Redirect URL” field.
Step 5 :- Click “Generate a secret” button and you will receive the Client ID and Client Secret.