Transaction not yet indexed

MpbLaXwAKcEJBCenqn8qsdaEJVXME9Gtsws659ZRaRuZgLSeRoYRcm5thAr8v1LdTMByUXeXwEnUCcELgC17pBT

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