Transaction not yet indexed

5u21444D8mg8ZmysdoyGhXfUsm2ps9pxAiGaSX5EW9Trh1YNQWNJXmPeUck2F9bmYArueExSMEYEn1k6sN3eUCsR

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