Editing Storage and Logistics (section)

=== Requests and Transfers ===
Item Requests and Transfers can be generated by a component, by setting the Store register on an entity or the user can manually drag an item from its storage onto another unit. 

When a Request is generated, the item at its source and an inventory slot is reserved at the destination. If that resource exists in the request source already, then the request will merge with an existing partial stack of resources with the remainder of the request overflowing into the next available inventory slots if any exist. 

An active request does not imply that the source entity has available space - in the event of no available space, no items will be reserved for delivery until free storage space exists.