How to write a conic constraint in GAMS?

Hello,
I need to add a conic constraint in my model. For example, the constraint is ||2A, 2B, C-D||<= C+D. The order of the conic is 2. How to write that in the GAMS language?
Thank you.

Hi,

There is a section on Conic Programming in the documentation. Maybe that gives you some useful hints.
https://www.gams.com/latest/docs/UG_LanguageFeatures.html#UG_LanguageFeatures_ConicProgramming

I hope this helps!

Fred