Transaction not yet indexed

668mApkz8dHNVGaGMsJsv4sKYD7hGggoE5j8WwAD8cqJnTRkdVUWz4mi2A1EDvn2eFphXMA2yWqcJMoBbnuRqevF

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