ID:13008 TRI or OPNDRN buffers permanently disabled

CAUSE: You connected the output enable input signal of a TRI or OPNDRN buffer to GND . The tri-state buffer does not reduce to a simpler form. This condition may be the result of logic synthesis. If you connected the TRI or OPNDRN buffer connected to a bidirectional pin, the message indicates that the pin will always drive in.

ACTION: Check the design file for errors. Connect the input to a node other than GND if you want to enable the output enable input. You might also want to substitute an INPUT pin for the BIDIR pin (and remove the TRI or OPNDRN buffer) if the pin is always driving in.