Dear all,
everything works perfectly apart the sitemap link analysis.
When I start it the window with the progress bar opens.
It starts running with the green progress bar.
After a while the progress bar become red.

The window says:
"Sitemap is being generated and analyzed, please don't close the page until completion.
Open a new tab to continue navigation.
Error storing XML file in the analyzer cache folder,
please check permissions and try again"

com_jmap/cache as +xw permissions so it would be able to create new files and, if needed, folders.

Is there any other cache or temporary folder where jmap is writing in?

Dear,
thanks so much.
The exact folder where the file is stored is located at the following path:

root\administrator\components\com_jmap\cache\analyzer

Best regards

I know, all the com_jmap\cache inherit that +wx permission.

Any other suggestions?

No there is nothing else, when you start the process check that the file is written by FTP, otherwise it's a permissions issue.