Transaction not yet indexed

21n688fbum1qn7FMw9vJ1fBKBfKTMKPo9qwBTnSy17BusArVayBVbgqDBhkGNGGhwb8EnH1oSfW3mcGLB44GLREk

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