Transaction not yet indexed

21d6CtSissmX9oaFXqHTev5n5x7jvfXctwd7DReZ8QwpKN1ioGePgn4SLNSrxEWiqdqKySZBNf7DZEGJ9QwCqUaE

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