Hi Włodek,
Because ID is a system-generated, read-only value we do not expose it for use as an Auto Label.
Instead you should use one of the Attributes found in Tools | Personalization | Product Attributes, or create your own custom Attribute, which will have the advantage of being able to support any value that YOU want to apply.
See the movie "#11 SD7.4 - Auto Labels" at
https://www.stardraw.com/sd7/movies