Is it possible to edit a link or item ID of a survey in ArcGIS Survey123?

No, it is not possible to edit the URL link or item ID of a survey in ArcGIS Survey123. This is because once a survey form is published, a unique link is automatically generated for the specific form and cannot be altered to prevent overlapping links. It is also not possible to change the item ID of a survey form to correspond to an already existing link. The only solution to alter the link or item ID is to publish a new survey form altogether.