An amendment was a change to an existing law or other regulation with legal effects.
By 2154, twelve thousand amendments existed to the Andorian Ushaan. (ENT: "United")
In 2370, the Ferengi government debated an amendment to the Rules of Acquisition, so they could not provide information about DaiMon Bok to Jean-Luc Picard. (TNG: "Bloodlines")
In 2374, Grand Nagus Zek added an amendment to the Ferengi Bill of Opportunities giving females the right to wear clothing. (DS9: "Profit and Lace")
In 2377, Voje attempted to amend a patient's treatment coefficient, but the allocator denied this amendment. (VOY: "Critical Care")