In each model, you define a Standard-Explicit co-simulation interaction to specify the interface region (region for exchanging data) and coupling schemes (time incrementation process and frequency of data exchange) for the co-simulation. Only one co-simulation interaction can be active in each model, and the settings in each co-simulation interaction must be the same in the Abaqus/Standard model and the Abaqus/Explicit model. For more information, see “Defining a Standard-Explicit co-simulation interaction,” Section 15.13.10.