Filter does not work for one specific entry


I use this endpoint /v1/projects?filterby=substringof('....',name) and filter the results by the name of the projects. It works very well until I come to the name Angebot: Begleitung Rollout P&O (ENTWURF). Here it says Something is wrong with the given filterby expression. (See the screenshot).
Is it because of the name or is there another problem I don’t recognize?

Thanks in advance!

Hi @make,
It’s probably because of the ampersand (&) in the name. This is a reserved character in URLs and needs to be URL-encoded. Can you please try to see if this helps? Thanks