Slug ya está ocupado

Pretty Links 2.0.0 and newer should be far less affected by this type of conflict than prior 1.x.x versions. However, on occasion there will still be conflicts between the slug you’re trying to use for a Pretty Links and some other content on your site.

1. The first thing to do is try and visit the URL with the slug you’re trying to use and see if anything obvious exists at that URL. If so, you’ll need to change that item’s slug before you can use it in Pretty Links.
2. Si no aparece nada en el paso 1 de arriba, lo más probable es que tenga un elemento adjunto multimedia o un elemento de menú (Apariencia -> Menús) que tiene ese slug reservado, así que asegúrese de buscar y comprobar que no hay ningún conflicto de esas dos fuentes.
3. The last option would be to use a plugin like Adminer or your webhost’s phpMyAdmin tool to search your wp_posts table for anything with a “post_name” equal to the slug you’re trying to use.

   SELECT * FROM wp_posts WHERE post_name LIKE '%slug-here%';

4. If you’re unable to find the conflict, feel free to fill out a solicitud de asistencia y haremos todo lo posible para ayudarle. También se recomienda encarecidamente que proporcione acceso de administrador a su sitio en el ticket de soporte.