The following graphic shows the relationships of different resources in a resource network. The network represents the sequence in which the resources are used in the production of a batch. For example, charging takes place in charge vessel B1 before the material is processed in reaction vessel R1; both actions occur before the material is discharged from the cooling tank E1. The resources B1 and R1 are in a predecessor-successor relationship with each other, as is the case for the resources R1 and E1.

The reaction vessels R1 and R2 represent equal resources. In the production process, either one can be selected for the transfer of the batch from charge vessel B1 to a reaction vessel. R1 and R2 can be replaced by a planning resource in the planning phase.