Transaction not yet indexed

421c91mLKXXT2zC8uLPsWA395TbEAtFQrWHeFk9DNX1i16xcmNBngzipvnkqvMqaExYWFWRShdBkxbq58Vdu5zYd

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