Transaction not yet indexed

21A8RMzaTVJqS6kLNZnej84DmLm7LHmRrDDvGzF1ZaAdg2z6AVypv5SUdzQbYYeVVrcFHXePRTbtvdrUceApKDn8

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