Executive Rule No. 14 establishes the mandatory notification requirements for any Incorporated Body. It dictates that the Tax Department must be informed within 30 days of any changes to registration data, cessation of activities, or alterations in legal form, such as mergers or assignments. The rule also mandates pre-notification for assignments from other taxable entities before finalisation. It specifies that a new tax card application is required following any modification, and all supporting documents must be submitted for review, approval, and official endorsement to validate the changes.