Transaction not yet indexed

Ek28FQYWuCeGPw5219KHDecdvfH7ZSdAGEUo13YYZuCvtomoQxtJUhvZka74DWt5QdDYVbUBqqwqXrZ98msAtPY

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