Transaction not yet indexed

5m21SWgPDJJvNZJ3u7PG7eMZ2whAMjHiKo65nXtoe5Fr6MroztHCSm3tRx6XFC9iZLEuEMEC12f9iqZiLkvK4s15

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