Transaction not yet indexed

Let8HQSEF2XBiHiybC4baCvESz1wJNqFaLCeuaDDnAnQej9zi3FSZpyLZ9a3uZvJ8XHdqJeFx1UrJcZLDEaiz55

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