The following quantity-specific limitations apply:
On a given interface, if a transfer of Force is defined, then a transfer of Incremental Displacement cannot also be defined in the same direction, and vice versa.
A single region cannot be the source of both Temperature and Heat Rate, nor the target of both Temperature and Heat Rate.
Regarding the Heat Transfer Coefficient (HTC) and Convection Reference Temperature (Tref) data quantities:
For a given source/target pair of regions, if a transfer of HTC is defined, then a transfer of Tref must also be defined, and vice versa.
A transfer of HTC+Tref is equivalent to a transfer of Heat Rate. If a transfer of HTC+Tref is defined for then a transfer of Heat Rate cannot be defined, and vice versa.
Note: System Coupling and System Coupling in Workbench each define and handle data transfers slightly differently. For context-specific details, see Rules for Adding Data Transfers or Data Transfers for System Coupling in Workbench.