Are Work Item IDs unique in TFS, even when using multiple projects?

user_744338 0
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This feels more like an 'English' question than a 'Stack Overflow' question, but I'm about to commit to a data structure that will be very hard to change later, so I wanted to be absolutely sure about this.

https://docs.microsoft.com/en-us/azure/devops/boards/queries/titles-ids-descriptions?view=azure-devops

This documentation states that the ID field of a Work Item is unique across all projects and within a project collection. If I am reading that correctly, this means that once a Work Item of any type - User Story, Ticket, Data Fix, Bug, Code, whatever - has been created inside one project with one ID, then no other project on the same TFS server will ever use the same ID number for a work item of any type, in any project? Even once a Work Item has been closed - possibly deleted - the same ID number will never be reused?

azure-devops tfs
2 Answers

From this official document,we can confirm that work item ID is unique identifier which is assigned by system.

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We can also certify this by testing. We create a task item in project 1, the assigned id is #210, then we create another same item in project ed, and the assigned id is #211. It can be seen that the id assigned by the system is incremented in order.

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Then we delete the item with id #211, and then create a new item in project1. The newly created item has an id of #212. It can be seen from this that the id of the deleted item is not reused.

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In summary,it can be sure that Work Item IDs are unique across all projects. You don't worry that work items with the same id appear in different projects.

user_115081920

Yes. You read it right. Work item IDs are unique for a collection though you delete/destroy one.

user_88575380
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