Transaction not yet indexed

Nt55ef9CnavKrwixitBDh9zt2d8aZRqa2ua2o7jFTAiyLizrB6Dxka5f7hQHoTWa1X5tFfV167VU2gXnpRb4ys3

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