Transaction not yet indexed

28tmkyabHicA4hQSRDvcGx6Tff4MtU4AjNSKAZ9X5TezW4twPmF8xJrxvcBtLL16fMo5HsWXQNQjzwWoDkrGFun3

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