In a drag and drop operation, each flavor of each instance of the class CL_DRAGDROP brings a communication overhead of between 20 and 70 bytes. As long as you do not have too many instances of the class CL_DRAGDROP (<100), this is not a problem. Furthermore, this communication overhead occurs only once.

You must not create a separate instance of the class CL_DRAGDROP for each drag and drop-enabled object. Instead, all objects with the same behavior should share a single instance.