Transaction not yet indexed

XMitLEX3dmskUPeipNqGdWs5iTAqCKQFdqguRv3zspmj7Ba88VJqhJqiXvZ1oEEJdJJ2NiJFUGqU7jpjEpq16fQ

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