ID:169181 Cannot place I/O pin <name> with I/O standard <name> in pin location <name> -- possible switch coupling with I/O pin <name> in pin location <name>.

CAUSE: You assigned the specified I/O pin with the specified I/O standard and location in the device. However, the Fitter cannot place the pin at the location because that location is too close to DCLK.

ACTION: Delete or change the location assignment, or change the I/O standard assignment, or select the same target device with a different package.