Copy of the occurrence, that is, only the graphical representation of an object, rather than the entire object as with the definition copy.
All occurrence copies of an object represent the underlying object definition.
You can create copies of objects. When copying an object, you can decide whether you wish to create a new object (a definition copy) or a new object symbol for an existing object (an occurrence copy).
It is helpful to create a copy of the object symbol for an existing object - that is, only a copy of the occurrence of an object - if exactly the same object is used at various positions in the model or in different models.
For example, if, in the model, you are creating, Plant 1 supplies goods at various points of the model, it is advisable to use occurrence copies at these points. These refer to the same object, and any changes to this object apply to all occurrence copies.
If you want to rename Plant 1 to Plant A, for example, you only need to do this for ONE of the occurrences: The names of all other occurrences are simultaneously changed to Plant A.