Transaction not yet indexed

HKkfRbTaHo5e8uibWpZ5vd67S2hYSpstvBpMTMNpsF2txbQLJ1nvKDjwZwJqGcpaEnJVWwEF8a13BhcQUmD4XXJ

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