List<Sales_Account__c> salist = new list<Sales_Account__c>([Select Seller_Profile__c, Manager_Profile__c, Director_Profile__c,
                                                                Executive_Profile__c, Director_is_Active__c, Seller_is_Active__c,
                                                                Manager_is_Active__c, Executive_is_Active__c, Sold_To_Account__c,
                                                                Sold_To_GrandParent__c,
                                                                Sold_To_Parent__c, Manager__c, Director__c, Executive__c, Seller__c
                                                                FROM Sales_Account__c LIMIT 1000]);
         for (Sales_Account__c sa : salist) {
            AccountIds.add(sa.Sold_To_Account__c);
            ParentAccountIds.add(sa.Sold_To_Parent__c);//parent
            GrandParentAccountIds.add(sa.Sold_To_GrandParent__c);//Grandparent
            UserIds.add(sa.Manager__c);
            UserIds.add(sa.Director__c);
            UserIds.add(sa.Executive__c);
          }

                            /* Map keyed on account Id + user id */
     Map<String, AccountTeamMember> accountTeamMap = new Map<String, AccountTeamMember>();
         for (AccountTeamMember atm : [SELECT Id, AccountId,  UserId FROM AccountTeamMember
                                             WHERE User.IsActive = True AND  AccountId in :AccountIds LIMIT 1]) {
                                 accountTeamMap.put((string)atm.AccountId + (string)atm.UserId, atm);
                                 system.debug('ATM'+accountTeamMap);
                            }

for (Sales_Account__c sa : records) {

    if (sa.Sold_To_Account__c !=null && sa.Seller__c !=null && sa.Seller_is_Active__c == 'Active' &&
       (sa.Seller_Profile__c == 'LYB Sales' || sa.Seller_Profile__c == 'LYB Business Admins' || sa.Seller_Profile__c == 'LYB Executive')){
                        /* Check for existence of user in map.  If not found, add */
                         AccountTeamMember atm = accountTeamMap.get((string)sa.Sold_To_Account__c + (string)sa.Seller__c);
                         AccountShare share = accountShareMap.get((string)sa.Sold_To_Account__c + (string)sa.Seller__c);
                          if (atm == null && sa.Seller_is_Active__c == 'Active') {
                              atm = new AccountTeamMember(AccountId = sa.Sold_To_Account__c,      //Soldto
                                    UserId = sa.Seller__c,
                                    TeamMemberRole = 'Sales Rep');
                                    accountTeamMembersToAdd.add(atm);
                            }
                           if (share == null && sa.Seller_is_Active__c == 'Active'){
                              share = new AccountShare(AccountId = sa.Sold_To_Account__c,
                                      UserOrGroupId = sa.Seller__c,
                                      AccountAccessLevel = 'Edit',
                                      OpportunityAccessLevel = 'None',
                                      CaseAccessLevel = 'None');
                                      accountShareToAdd.add(share);
                           }

          if (isUpdate) {
             if (sa.seller__c != oldmap.get(sa.Id).Seller__c && sa.Seller_is_Active__c == 'Active'){
                 Sales_Account__c oldSa = oldMap.get(sa.Id);
             if (oldSa.Seller__c != null && oldsa.Seller_is_Active__c == 'Active') {
                    atm = accountTeamMap.get((string)oldSa.Sold_To_Account__c + (string)oldSa.Seller__c);/*comparing with MAP*/
             if (atm != null && sa.Seller_is_Active__c == 'Active') {
                    system.debug('ATM:::::::::::::'+atm);
                    accountTeamMembersToDelete.add(atm);/*Add the sellers to Delete ATM list*/                                     }
                    share = accountShareMap.get((string)oldSa.Sold_To_Account__c + (string)oldSa.Seller__c);
             if (share != null && sa.Seller_is_Active__c == 'Active') {
                 accountShareToDelete.add(share);
             }}}}}
                                  if (isUpdate) {

             if (sa.Executive__c != oldmap.get(sa.Id).Executive__c && sa.Executive_is_Active__c == 'Active'){
                 /*old map seller and new seller */
                 Sales_Account__c oldSa = oldMap.get(sa.Id);

             if (oldSa.Executive__c != null && oldsa.Executive_is_Active__c == 'Active') {
                    atmExecutivePAR = accountTeamMap.get((string)oldSa.Sold_To_Account__c + (string)oldSa.Director__c);/*comparing with MAP*/

             if (atmExecutivePAR != null && sa.Executive_is_Active__c == 'Active') {
                    accountTeamMembersToDelete.add(atmExecutivePAR);/*Add the sellers to Delete ATM list*/
                                  }
                    shareExecutivePAR = accountShareMap.get((string)oldSa.Sold_To_Account__c + (string)oldSa.Director__c);

             if (shareExecutivePAR!= null && sa.Executive_is_Active__c == 'Active') {
                 accountShareToDelete.add(shareExecutivePAR);}}}
/* send adds and deletes to db */
              if (accountTeamMembersToAdd.size() > 0){ //upsert to AccountShare must be done before Account Team
                    accountShareToaddList.addall(accountShareToAdd); /*Adding the SET to a LIST to perform DML operations*/
                  system.debug('accountShareToAddList'+accountShareToAddList);
                  upsert accountShareToAddList;
                    accountTeamMembersToAddList.addall(accountTeamMembersToAdd);

              try {
                    upsert accountTeamMembersToAddList;

                    system.debug('accountTeamMembersToAddList'+accountTeamMembersToAddList);

                      }
                     catch(DMLException ex) {
                     if(ex.getMessage().contains('error: DUPLICATE_VALUE, duplicate value found: <unknown> duplicates value on record with id: <unknown>: []')) {
                     upsert accountTeamMembersToAddList;

                         }
                         }
                                                    }

              If (accountTeamMembersToDeleteList.size() > 0){

                      delete accountShareToDeleteList;/*creating a delete list for ATM*/
                      delete accountTeamMembersToDeleteList;
                                                       }