Many non-valid SEF links

Hi,
I have posted this issue several times and it never really came to a solution. Now I have published a new page with FlexiContent and there are many, many invalid (404) links or links that display information that should not be displayed at all. I have tried all kind of SEF settings but everything I tried has not really changed anything.
The 404 links are built the following way:
www.neotechnik.com/de/anwendunge ... nussmittel
This part is built from menu items.
www.neotechnik.com/de/anwendungen
"deutsch" as a 1st level category. "branchen" and "nahrungsmittel-und-genussmittel" are sub-categories of "deutsch". There is no internal linking to such an SEF address.
Even more worrying are links that actually display contents. If you take the part after "deutsch" away, e.g.
www.neotechnik.com/de/anwendungen/34-deutsch/
you end up with a page that should never be displays. As you might so the active menu item is
www.neotechnik.com/de/anwendungen
which is a valid link. Don't know why adding "34-deutsch" is existent at all.
www.neotechnik.com/de/anwendungen/16-deutsch
is also valid, but the shown page makes no sense. It should not be available because the page content shown makes no sense at all!
After just one week I am finding hundreds of those links in the redirect component or at my website statistics. Either as 404 errors or as referring links that link to an invalid 404 link.
Rooney

Hello

-- links maybe become invalid if you change the SEF parameters or if you modified .htaccess or due to a bug



so the question is out of the links the previous post,

1. which is the page (1 link please) that -containes- invalid links, then we can look at it there,
2. which link is invalid inside the page "1"

Hello

the page that containsinvalid links is this:

www.neotechnik.com/de/anwendungen

???

Ok. I corrected this link. It is not related to the issue. I have attached an image of some of the links from the redirect component. Always, the 1st level category is added to the path.
Rooney

Hi,
over the weekend discovered something that made me really speechless. Joomla has a REAL SEF bug. To cot a long story short, it allows many invalid links because it only cares about the ID and not the title or alias of an item. I first thought it is a FC routing problem as the posting in this thread show, but than I found this:
forum.joomla.org/viewtopic.php?f ... b24bbd16e9
The only solution is to solve most of the links with rewrites in the htaccess. I could reduce the links in the Google index from 3000 to just about 500. The other 2500 have been rubbish, that showed category views that made no sense.
On a other Joomla-only page that has only about 50 single pages I found 150 links that all showed the startpage with different category blogs or articles. The links all started with a digit:
www.domain.com/123-title
You could change the "title" to anything and it resulted in a "valid" link...
Rooney