Hi @ZTC ZTC JGOTA,

It seems this RMB option is enabled only for records with certain Action Statuses such as “In Progress”. 

For the other statuses, it appears greyed out as below. 

You will see the context menu items even when they are disabled, if you have below option un-checked under Tools → Options in IEE:

If you need more information regarding the functionality of this particular menu item, I would suggest opening a topic in ‘Products’ sub forum, so that a Manufacturing and Engineering expert can help. 

Hope this helps!

As @Charith Epitawatta stated, this menu item is available only for Engineering Revision Transfer Action records with an Action Status of In Process. Records obtain this status only when a Detailed Transfer has been performed for an Engineering Part Revision.