Transaction not yet indexed

UX6FeSkBPgC3Pb96DAgvcmMqzbLu5XsjCv4AvBD821VgFhuFrpBWwfM2RZ1nQTgmkbZD1vsMbKCXfaNeQQvpqgq

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