I suppose, sir, that the devil is always in the details, as they say. A code of conduct can be helpful. We've seen in the United Kingdom a code of conduct that has generally received positive reaction and has appeared to be helpful to some of the issues between grocery retailers and suppliers in that jurisdiction.
Evidence of meeting #9 for Industry, Science and Technology in the 43rd Parliament, 2nd Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was issues.
A recording is available from Parliament.