Transaction not yet indexed

21Sf5N5m77cAAn4XZByyST4azp5zVkhteV9MPLh5ZJ5ZbiYGh7NVUgiPH8W98XA6wCvikXh1R4MyhBG9i1DkzHUL

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