Transaction not yet indexed

UM855jvXpzXf3A7sXxiuihw6X82zAgTzAcxcsvTjcWPitPWSo1m3e5ccdgWaHWMMPQb6gjj59teo5SkBJBHv9cv

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