Transaction not yet indexed

21Ex8MizvT3QXf7sqFhvWWTgMsxPDjA573YrRs6SwAqNEEs6mc8fb3TDgdcoiX2HsDnUoPZvXdSj9wwbUS6q4Qo2

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