curl --request GET \
  --url https://api.sandbox.co.in/gst/compliance/tax-payer/gstrs/gstr-1/supecoa/{year}/{month} \
  --header 'authorization: <authorization>' \
  --header 'x-api-key: <x-api-key>' \
  --header 'x-api-version: <x-api-version>'

{
  "code": 200,
  "timestamp": 1768901352330,
  "data": {
    "status_cd": "0",
    "error": {
      "message": "No invoices found!!",
      "error_cd": "RETWEB_04"
    }
  },
  "transaction_id": "6d743aac-3cbe-49da-aef8-110689ddbaad"
}