Transaction not yet indexed

5Sm4EXq6somJ8PRwG6N42mMjPM1qSnie6PUzbKDpdsqqhMmYfFypezt68K9oSC6yDodJgDcqGHujPHhPw5V9H8Vy

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