Transaction not yet indexed

521Ks43jDMixoKtM9HPkTZfuKtmWjjCkT8tVfjQCYMDnXNYJVKbxAUrgkb6ZVyguzCN6vCNescDUCV96XWFPat6s

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