Transaction not yet indexed

21USKDyKeUMZ7EtAEN88eyR4eYFTUQFTZZrUWGPCzMEtP8RheVmW5ASe6LN9JPCaeFks1WV9HZNaNeL3NAtdBbbY

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