Transaction not yet indexed

21Sf5KGnDLXF3Zv2qyof8K77MzKKNM4RmuiznUPBXiEmah8gcV13pLPu4TULssdjPCVT3mcQb2Heo1XaP2c52tFc

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