Transaction not yet indexed

MLTt99KNHWsgiuZpA2BykYWhfPhcxkzxQ5uSjKdmJrMdP6bGD2TJ8i7Q2R4gvHoXBcE7UeanYCiGe7RL6AkM1Hv

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