Dear Community,
You no longer need to set the ic_api_sandbox_mode site config to enable sandbox mode for testing GST APIs. You can simply toggle Sandbox Mode from the new API section in GST Settings (make sure you’re logged in to your India Compliance Account to find the relevant option):
What happens to your existing site config?
It will get ported to GST settings when you update your installation. Note that the ic_api_sandbox_mode config is now deprecated and setting this config will no longer have any effect.
Happy Testing!