What mode is needed to switch to live? Thaabit Mollagee August 16, 2016 13:40 Updated Follow Mode 1 is required when switching to live, Mode 0 is for testing purposes only. Related articles What is my Merchant ID and how do I find it? Which banks can I integrate into? I'm receiving an error "Invalid Gateway ID" in test mode, what can I do? Is there a message I can display to reassure my customers that their transaction will be secure? What is Virtual? Comments 0 comments Please sign in to leave a comment.