Transition Page URL Report and "&" in URL

Hello Community,

we have the problem that our CMS system generates URL’s that contain a “&”. Unfortunately, this circumstance prevents the API report “Transitions.getTransitionsForPageUrl” from generating a meaningful result.
Example URL:

The “&” between 20726 and topic seems to be interpreted as a separator, so the report does not contain any data.

Is there a way to work around this or to call the report so that the character is interpreted as part of the URL? Unfortunately we can’t use the GUI because we need the option “limitBeforeGrouping”.

Thanks in advance