Transaction not yet indexed

SmUnAjCVe9wmk7SZJX1AuRCqhLY71FBfbLZb8oGYu2Tp4E2v3wDy7T4NGQnvfKrjdCWqWuBAySQqJoLLAGnVT5e

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