Transaction not yet indexed

28Ke6NWYrFeqJGbS59a1F6KdkqrbGVZqj5mAUKaAgPkCVCC29h4NckFtEKWZnuY77mbCNctHcpDtjXUYHm2q3wVm

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