The RHS variable list is used when the dense format of the CONDATA= data set is used. The values of the SAS variable specified in the RHS list are constraint right-hand-side values. If the RHS list is not specified, the CONDATA= data set is searched and a SAS variable with the name _RHS_ is used. The RHS list variable must have numeric values. If there is no RHS list and no SAS variable named _RHS_, all constraints are assumed to have zero right-hand-side values.