This is the error message that is displayed when you attempt a connection.
You get a LonMaker Error message when applying a connection. "this connection would violate a network variable selector constraint, which limits the number and type of NVs a device that may use the same selector. The automatic use of NV aliases was unable to avoid this) there may be no aliases available).
One NVO is attempting to be connected to multiple NVI's in one device.
LonMaker does not allow the same NVO to be connected to the same receiving device more than once.
Add extra NVO's in the sending device to allow for a one-to-one binding with the receiving NVI's.