Transaction not yet indexed

5X21UTcYuQrbuW6kVhdduM4vE9mnEFFKb2f1Fidi5mmh2u2WJ6DHbQycZmUuhjj4N5X2b26Pxp4Qjk3YDGJFdmzJ

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