At Key Enterprises, the controller is responsible for directing the budgeting process. In this role, the controller has significant influence with executive management as individual department budgets are modified and approved. For the current year, the controller was instrumental in the approval of a particular line manager’s budget without modification, even though significant reductions were made to the budgets submitted by other line managers. As a token of appreciation, the line manager in question has given the controller a gift certificate for a popular local restaurant. In considering whether or not to accept the certificate, the controller should refer to which section of IMA’s Statement of Ethical Professional Practice?