Transaction not yet indexed

28LjPffPs6q7Xgo2pMzbqSchpnkhT6RKzuiqdCtFJ9aWpLHus9c7Jcbm4NJf7c2ZE8SLwVHuQyV7qVUVDZJsLn9m

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