Transaction not yet indexed

iStsztECLSF5cHkJuAYJEww1oZFJGqBb2JWjYb2cA5cLfLmBvwUU1yYmjnakaVRXuXtPj8Yg6QnZMgaVFvzd2YC

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.