Transaction not yet indexed

21TsfqdSASAYu7WDvn7yXNjdcKfxwQuwkmXsh2JMsTNq8pHNA5QCnY3EPfvxgCqTfRmveV6zFfgeRFSS5Aj6yEoz

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