Transaction not yet indexed

21Uk8irWEWi92aa5jTwKqA5Puf7tZ9ssModSSx7Z9DULNGkA78nVHpsi9QrJGfQBqew7UDCdJtt9MPbznFH2GLue

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