Transaction not yet indexed

5U21KpzPEJYCDH28aAdP91Lo8zzSQe1HfEaZrRB3mnmm6MCmb63RNtpW8TgKSkrwfFwH6BbDQm9PhzT6PPr4EhmU

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