Ok, I understand now. You want to pass the CBSubs Promotions coupon code to iDevAffiliate. We've implemented same for PostAffiliatePro and is an easy enough implementation, but CBSubs Promotions allows for more than 1 coupon code to be applied.
Was able to find their documentation regarding coupon_code (what I was requesting they provide in my earlier replies), but it does not appear to support multiple coupon codes. So this will be able to be implemented, but we'll only be able to pass the first coupon code in the basket.
www.idevlibrary.com/docs/Coupon_Code_Commissioning.pdf
Have added a feature ticket as follows to review further for implementation.
forge.joomlapolis.com/issues/8267