Accessing clocks across cDaq modules

I am trying to synchronize tasks across different cDaq modules.  When I have done this on previous daqs (with a USB-6343) I have done this by choosing a master task and setting the other tasks' sample clock to be equal to that tasks' sample clock.  However currently I am trying to synchronize an analog output task (on a ni-9264) and analog input task (on a ni-9220) and this method is not working.

I am trying to set the analog input sample clock to the analog output sample clock but I get the error:

<Message: Source terminal to be routed could not be found on the device.