Transaction not yet indexed

668yMVXEtaxDRvohrEYzDbUgpSYtAxXMahUmrvvKQw3TaNqLr67cPyLpL8aaa4wiVYWVmCzTSu1kwCWgWxJQUMWZ

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