Transaction not yet indexed

MphXoK7NuJkKp7fBfWHe7uWUkysV21HeWVYHnYXJHTbStAXyZqCWgApcuNxXnCntQ1m8xPRmvQg4hWTQC8FFvq7

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