I get new forums topics by email. Some links open correctly -> forum topic. But some leads to "403 Forbidden" page. Whats the problem???

OK page:
https://support.industry.siemens.com/forum/ww/en/posts/sinamics-s120-cu320-2-dp-not-compatible-with-tia-v16/286792/?page=0&pageSize=10#post1103589

Wrong target page:
https://support.industry.siemens.com/forum/WW/en/post/1103551/

See enclosed emails ...

Hi PetrNowak,

thank you very much for asking and forwarding this to us! 

The reason why the link isn't accessible is that the user has deleted his topic. In the meantime, the user has created a new topic and can be found here: Using constants from a function

For the future I will take it as a suggestion for improvement, that for deleted topics an appropriate message comes. 

If you have any other E-Mail notification that lead to the "empty", please inform us.

Best regards,
Jen_Moderator

P.S.: I removed your attachment, because your E-Mail address was visible.