Transaction not yet indexed

21mkLSfYsSXHRWQGU8ua6YedPEBsfvp9aDf4A2hfFkpJs5dTkBy771FG6Ur171d163SCWJaUMrHGsiyHSZT1nNB7

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