Transaction not yet indexed

MYum2qZAEncd4dKxu3Rg3dDKs1bz5u65qCniRXxLQN81Lq5BggFbPLpMWrsKNAPSM19hEoCYkDbdUJXcVPDqKXq

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