Transaction not yet indexed

64Mumdv1LAFgJv1u7WXeXfdFUqDR6zpcQojr7VfARqw4oXHn8t8fRH1m2hF3CbtcniSrAiwpeWdkNwFB9VhoE5aW

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