Transaction not yet indexed

MkEEyUSoYUnDMpArdJzNtpUSqUfqPKbmTw2w1NPBcqcxVH6UaifR2ccysxgNNhbSQNkKFTeuu2grFpELxmhPL8T

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