ID:176701 Bidirectional pins <name> and <name> with pseudo-differential I/O standard have conflicting assignments, "Allow Single-ended Buffer for Differential-XSTL Input" (XSTL_INPUT_ALLOW_SE_BUFFER) and "Treat Bidirectional Pin as Output Pin" (TREAT_BIDIR_AS_OUTPUT)

CAUSE: You used a bidirectional pin with pseudo-differential I/O standard with both the XSTL_INPUT_ALLOW_SE_BUFFER and the TREAT_BIDIR_AS_OUTPUT assignments, but these are conflicting assignments.

ACTION: Use either the XSTL_INPUT_ALLOW_SE_BUFFER or the TREAT_BIDIR_AS_OUTPUT assignment, but not both on the specified pseudo-differential pair.