Transaction not yet indexed

NB55nsJyJU3JQNFJWSCjcpcLsaNwshQEph6DKgEVVmPSbqMHJdTrvQgWuuPUM8fUqZdZY4adArK4c8Zk1Vm9dus

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