ID:287050 Group or node "<name>" in arithmetic or logical operation cannot contain don't care value

CAUSE: In a Boolean expression in a Text Design File (.tdf), you used an arithmetic or logical operation that contains the specified group or node, which has a don't care (X) value. The arithmetic or logical operation does not work if any of its groups or nodes have don't care values.

ACTION: Use only fully defined values (that is, values without don't care bits) in the arithmetic or logical operation.