ID:15726 Virtual pin clock not found for <number> virtual pins -- used Auto clock

CAUSE: You did not specify a valid Virtual Pin Clock assignment for the specified number of Virtual Pins in the design. As a result, Analysis & Synthesis converted the virtual pins in question to registered lcells, and automatically detects the clock associated with the virtual pin.

ACTION: No action is required. To avoid receiving this message in the future, assign the Virtual Pin Clock assignment to an existing clock signal in the design.