Field help (CCMCRVMIN) 

Use this field to indicate which minor version of the product this change request applies to. Minor versions might be used where there have been minor features or changes to the current form, fit or function, or significant fixes applied to a specific major version.

Type in, or select a revision or minor version code from the list of version codes displayed. This field is not available for entry if the product code defined in the Product field is not version managed.