Transaction not yet indexed

28MdNMKCAiABJBEAKuwXSn2KjFTXekRe7xvXVscizyGkmtQTiiTRCP3ThrHM8rLoKSpwpeaSt5BcyfNwBbv36ms2

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