Transaction not yet indexed

Um91M8ScUNggqBhCd4e1iQvDMNmgrRBt1amotmh7Btshoq63YfoE1DzyknA2mBJTzEYm22CS5pwU6SBjxCST9fK

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