Transaction not yet indexed

521E3ygDsMBkF3j42qNAtQ2P26LmsaHCC3osJCMDAz3cXDC7UXgFmkLXfQ8pdha7NKwLrovo6hy7T9ey5gaR9m4H

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