Transaction not yet indexed

RR28Y9zRubnQPsCFZ6QmUiadJjD5sEuLJR4gUbVjQu2sb3mKN8Dy2wmR7o7YLZjtQLhVKHnHhL2c6azcvwUpY1Z

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