In addition to the object types of an EPC, the following object types are available in the 'EPC (material flow)':

The Material type object type can be linked to the Function object type by means of an incoming or outgoing connection. In the case of an incoming connection, the materials that a function requires as input are defined. In this context, by selecting the corresponding connection type, you can define whether the function uses none, part, or all of the material. An outgoing connection specifies the material types created by the function.

Technical resources are required for material transformation. In process chains, you can also link them to the Function object type. To specify alternative resources that may be available, the requires alternatively connection type is provided in addition to the requires connection type.

If materials are to be packaged during function execution, packaging material types are needed. In order to specify the corresponding packaging material types, you can model a relationship between the function and the required packaging material types.

The following figure shows an EPC (material flow) and the corresponding technical resource types and packaging material types.