Transaction not yet indexed

mkP4E59bAd2xpTFUDSinvWwp5FZvTCNmkw6yBvmUdF2diSAq9rLstsWQkhp5nDuyn8ToA7w1uUUtjAHit17pdEJ

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