Transaction not yet indexed

iSB4bYPnsAGYspY3kjrKN3nGomzgg8fPQps3c4caZdm8hZPxyd7SzSnFgpp3MbsXMMsXawPX76cWW8ZrKkjxzqB

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