When an object is edited by a User, it is normally locked in a transport request and until the transport is released, the object remains locked for other users to work on that object.
There might be a requirement to unlock the object in such event the below steps can be followed.
Run transaction code to SE03 and choose the unlock object expert tool
Check the “Create versions of objects” and “create transport of copies” and then choose execute
Once the successful confirmation the object will be able to edit which is in the transport.