ID:169319 I/O pin <name> is the source node of a <name> logic option assignment, but the pin is not assigned to a pin location
CAUSE: You assigned LVDS Direct Loopback options from the specified source node to some destination node. However, the source node is not assigned to a pin location.
ACTION: Assign the specified pin to a pin location or remove the LVDS Direct Loopback assignment to the pin.