For releases prior CRM.COM 15R15.2.0 , this parameter was is mandatory From CRM.COM R15.2.0 and onwards , this parameter will be mandatory on conditions. It will not be mandatory when an email address and a reference code is provided (given that a reward scheme supports sign ups based on auto-generated reference codes, reference code generation method is set to "AUTO_GENERATED")semi-optional and It should be specified if the email address is not specified |