Transaction not yet indexed

21Unn5ZDiHj2a6aMaje64yR2sEesSBCaERgjoKPAZDFB31xmC2PsdqWmMSLcZpn8zYaP9cXYNrVN6sAPU5QTDoPq

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