Azure DevOps - Can I have work item auto-id numbering separated by project?

Question

If I create a work-item in project 1 with id 100 then the next work-item would be 101 if I create another work-item but in project 2. I need work-item id 100 in project 1 an

Answer 1

The unfortunate answer is: no.

The reason lies in the fact that the work item ID is also used as the single unique identifier to link work across projects in the same project collection (on-premise) or organization (cloud). Hence, the number must be unique in the whole collection.

There have been multiple attempts in the past to separate projects and the identifiers. All have met an untimely end due to the complexity involved and backwards compatibility concerns.