Transaction not yet indexed

421UM73s77cHJj2m94bxELvjGUBAutcDg2DRCVf1UHLBh3GGFPMtwH6CbfdCR9Q9SNqFhJsWusKYUEKy3si4Y42x

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