CMerchantAction public enum CMerchantAction Constants for MerchantAction tag. Specification: retail. signature The merchant has to sign the receipt. Specification: retail. Declaration Swift case signature none No merchant action is required. Specification: retail. Declaration Swift case none © 2019 . All rights reserved. (Last updated: 2019-06-04) Generated by jazzy ♪♫ v0.9.6, a Realm project.