Transaction not yet indexed

21Nb2vY2kXvN67wY7FxzRW5emFfH2cdKznPkhSQC4e2ZNN91fjGgNUrJysJU7nqxUZGcWXsn7Mgjd3P17MM6JxNJ

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