On sales orders type project, rebates agreement are taken into account and we can see the calculated rebate in lines details for each lines that fall into rebates agreements. When invoicing the sales order type projects for which rebates have been calculated in lines details, the rebate is not created (Sales and marketing> customer rebates> rebates) https://fix.lcs.dynamics.com/Issue/Details?bugId=330108&dbType=3&qc=9763898d5acbe3055511c39ffb5cc6339549e980c767339f9a260173f0e08a5e Remarks from Microsoft We do not support rebates. This is a feature request. Please have them log an Idea out on experience.dynamics.com so that we can see how important this is to all users. This specific scenario was not considered in the original design of the feature.