Transaction not yet indexed

421LktYQuHaNNRkJMjCsLuZNnb5geWf2J4MPKpJC87ZNM5wMnCnLk57SHfLtQmj5iqU1DwrBmVtXvRfiqv1vNGqr

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