Field help (ECVALMIN10) 

The minor version number can only be accessed if the tracking of major and minor versions is active at the level of the product setup (in the Management tab of the Product function, the Stock version field is set to 'Major and minor').

If the preloading of versions is active at the product/customer level (in the Customers tab of the Product function, the Version preloading box is checked), or by default, at the product/sales level (in the Sales tab of the Product function, the Version preloading box is checked), then the last active minor version is preloaded automatically.

The minor version number can be entered in the following cases:

If you enter a minor version number, the system checks that the major version does exist. If an error occurs, a warning non-blocking message displays.