How to query data when primary key exists twice ...

SELECT user_Id, user_Fullname,
       DesignationList, CompanyList
FROM
    (
      SELECT
           user_Id, user_Fullname, user_Zip ,user_Need,
           STUFF(
               (SELECT ', ' + Designation
                FROM   UserProfession
                WHERE  Prof_ID = a.user_Id
                FOR XML PATH (''))
                , 1, 1, '')  AS DesignationList,
           STUFF(
               (SELECT DISTINCT ', ' + Company
                FROM   UserProfession
                WHERE  Prof_ID = a.user_Id
                FOR XML PATH (''))
                , 1, 1, '')  AS CompanyList
      FROM UserBasics AS a
      GROUP BY user_Id, user_Fullname, user_Zip ,user_Need
    ) s
WHERE  (@Zip IS NULL OR user_Zip LIKE '%'+@Zip+'%') AND
       (@Interest IS NULL OR user_Need LIKE '%'+@Interest+'%') AND
       (@Company IS NULL OR CompanyList LIKE '%'+@Company+'%') AND
       (a.user_Id != @CurrentID) AND
       (@Designation IS NULL OR DesignationList LIKE '%'+@Designation+'%')