Document Metadata Capabilities

Hi Havard114, 

I can think of a couple of routes that you could use for this, but would involve you having a look into Managed Metadata and Content Types if these are new concepts for you;

Option 1: If you create a Managed Metadata Field you will be able to link this to a hierarchical term store in which you create [Product] as a tag and then [Version] as a sub-tag. You can then define that only the [Version] tags are "available for tagging" via the relevant tick box so that metadata will be shown as "ABC:1.1" 

Option 2: Depending on how many types of [Product] you have, these could be created as Content Types (that are a collection of Site Columns). I would advise that you create a "Core Content Type" to host all the shared metadata and then inherit from this for a Content Type per [Product] - this allows you to add unique metadata for each [Product] that may be even more beneficial than just version. 

These routes are all out-of-the-box in SharePoint.

Hope this helps!

Steve G

Senior SharePoint Consultant, AMT Evolve