Transaction not yet indexed

21d6zAfTRgsLLEifCJEmh8sCo5HXMQAXt8pda1mxQh2dVi8JSjrY7HVWM8pPdYgg64MyUCAMrxjPNZRn1eLF9djy

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