Transaction not yet indexed

iS3f2ujKw9qVpP3jg2FQ83jbrzvQFaRcQjv24x9zmPVeC9cLf6Rdn7aE3maWpTssYb7YFPTCTPj2ftzffB9uT18

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