Field help (ECCVAL) 

The major version number can only be accessed if the tracking of major versions is activated at product setup level (in the Management section of the Product function, the value of the Stock version field is set to 'Major'). If the versions preloading is activated at the Product-supplier level, or otherwise, at the Product/Order level, the last active major version is preloaded automatically. Otherwise, the last major version with the 'Stopped' status will be preloaded. It can still be modified.