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kuldeep paliwalkuldeep paliwal 

Error Error: Compile Error: Illegal assignment from List<Project_Team__c> to Id at line 93 column 21

trigger updateProjectTeammember on opportunityTeamMember(after insert, after update, after delete){
        if(trigger.isInsert || trigger.isUpdate){
        
        Map<String,String> OppOtmfieldMap=new Map<String,String>();
               OppOtmfieldMap.put('Sr. Client Insights Manager','CEM_Assigned__c');
               OppOtmfieldMap.put('Client Insights Manager','CEM_2nd__c');
               OppOtmfieldMap.put('Data Manager','Ops_Owner__c');
               OppOtmfieldMap.put('Lead Consultant','Consultant_assigned__c');
               OppOtmfieldMap.put('Support Consultant','Consultant_2nd__c');
               OppOtmfieldMap.put('Analysis Support','Analysis_Support__c');
               OppOtmfieldMap.put('BD/Development Partner','BD_Development_Partner__c');
        
        Map<String,String> projOtmfieldMap=new Map<String,String>();
               projOtmfieldMap.put('Sr. Client Insights Manager','Sr_Client_Insights_Manager__c');
               projOtmfieldMap.put('Client Insights Manager','Client_Insights_Manager__c');
               projOtmfieldMap.put('Data Manager','Ops_Manager__c');
               projOtmfieldMap.put('Lead Consultant','Lead_Consultant__c');
               projOtmfieldMap.put('Support Consultant','Support_Consultant__c');
               projOtmfieldMap.put('Analysis Support','Analysis_Support__c');
               projOtmfieldMap.put('BD/Development Partner','BD_Development_Partner__c');
        
            list<id> oppoIdList = new list<id>();
            map<id, id> oppoOtmMap = new map<id, id>();
            list<id> proMemList = new list<id>();
            map<id, id> oppIdProIdMap = new map<id, id>();
            list<id> proId = new list<id>();
            Map<Id,Opportunity> oppIdMap = new Map<Id,Opportunity>();
            Map<id, id> oppIdAccIdMap = new Map<id, id> ();
            Set<id> accId=new Set<Id>();
            
        for(OpportunityTeamMember otm : trigger.new){
                        OppoIdList.add(otm.OpportunityId);
                        oppoOtmMap.put(otm.Id, otm.OpportunityId);
            }
        
        map<id, list<Project__c>> oppIdProjectListMap = new map<id, list<Project__c>>();
        list<Opportunity> oppoList = [select Id, accountId, Project__c, (Select Id, Name from Project__r) From opportunity Where Id In: oppoIdList];
        system.debug('--oppoIdList--' +oppoIdList);
        for(Opportunity op : oppoList){
            proId.add(op.id);
            oppIdMap.put(op.id,op);
            accId.add(op.accountId);
            oppIdAccIdMap.put(op.id, op.accountId);
           // oppIdProIdMap.put(op.id, op.Project__c);
            oppIdProjectListMap.put(op.id, op.Project__r);
            }
                
        list<Project_Team__c> ptmListForInsert = new list<Project_Team__c>();
        system.debug('--proId--' +proId);
        system.debug('--accId--' +accId);
        system.debug('--oppIdProIdMap--' +oppIdProIdMap);
        system.debug('--oppIdAccIdMap--' +oppIdAccIdMap); 
        
        list<Project_Team__c> ptmList = [Select id, Account__c, Project__c, Member_Role__c, Team_Member__c From Project_Team__c Where Id In: proId];
        map<id, list<Project_Team__c>> proPtmMap = new map<id, list<Project_Team__c>>();
        
        for(project_Team__c ptm : ptmList){
        
            list<project_Team__c> tempList = proPtmMap.get(ptm.Project__c);
            
            if(templist!= null && templist.Size()>0){
                tempList.add(ptm);
                }else{
                        tempList = new list<project_Team__c>();
                        tempList.add(ptm);
                }
                proPtmMap.put(ptm.Project__c, tempList);
            }
        
        for(OpportunityTeamMember otm : trigger.new){
        
            Boolean flag = false;
           
            List<project__c> listOfProj = oppIdProjectListMap.get(otm.OpportunityId);
            
            for(Project__c pro : listOfProj){
            List<project_team__c> listOfPrjTm = proPtmMap.get(pro.id);
            
            
            if(listOfPrjTm!= null){
                for(Project_Team__c ptm : listOfPrjTm){
                    if(otm.userId == ptm.Team_Member__c){
                        flag =true;
                        }
                    }
                }
                if(flag ==true){
                }else{
                    Project_Team__c ptm1 = new Project_Team__c();
                    ptm1.Team_Member__c= otm.userId;
                    ptm1.Member_Role__c = otm.TeamMemberRole;
                    ptm1.Account__c = oppIdAccIdMap.get(otm.OpportunityId);
                    ptm1.Project__c = proPtmMap.get(otm.OpportunityId);
                    ptmListForInsert.add(ptm1);
                    system.debug('--ptm1--' +ptm1);
                    }
            }}
        if(ptmListForInsert.size()>0){

        insert ptmListForInsert;
            }
            
  }
}
Best Answer chosen by kuldeep paliwal
HemantJain0206HemantJain0206
 You have declare Map of type, map<id, list<Project_Team__c>> proPtmMap, So when you do proPtmMap.get(otm.OpportunityId) on line 93, it will return you with a list of project_team__c as you have done on line 77: List<project_team__c> listOfPrjTm = proPtmMap.get(pro.id);

Now on line 93: you are trying to assing Project__c(Id filed) to List<project_team__c>, hence the error due to type mismatch.

All Answers

HemantJain0206HemantJain0206
 You have declare Map of type, map<id, list<Project_Team__c>> proPtmMap, So when you do proPtmMap.get(otm.OpportunityId) on line 93, it will return you with a list of project_team__c as you have done on line 77: List<project_team__c> listOfPrjTm = proPtmMap.get(pro.id);

Now on line 93: you are trying to assing Project__c(Id filed) to List<project_team__c>, hence the error due to type mismatch.
This was selected as the best answer
LBKLBK
ptm1.Project__c = proPtmMap.get(otm.OpportunityId);
You are trying to assign a List<project_team__c>, derived from the MAP, back to a field (Project__c) in the object Project_Team__c itself.

That is not possible, because a field in an object cannot hold a list of the object.
kuldeep paliwalkuldeep paliwal
i am new in coading i want hear that when a new member add to OTM it also add to Project_Team__C.
Hear Project__ c is in related list of opportunity and Project__C is master of  Project_Team__C
there is so many Project__c for a single Opportunity when new member add to otm it also add to Project_Team__C of all Project__c  associated with that opportunity... can you please help me regarding this..where do i have to change..Thanx..
Amit Singh 1Amit Singh 1
trigger updateProjectTeammember on opportunityTeamMember(after insert, after update, after delete){
        if(trigger.isInsert || trigger.isUpdate){
        
        Map<String,String> OppOtmfieldMap=new Map<String,String>();
               OppOtmfieldMap.put('Sr. Client Insights Manager','CEM_Assigned__c');
               OppOtmfieldMap.put('Client Insights Manager','CEM_2nd__c');
               OppOtmfieldMap.put('Data Manager','Ops_Owner__c');
               OppOtmfieldMap.put('Lead Consultant','Consultant_assigned__c');
               OppOtmfieldMap.put('Support Consultant','Consultant_2nd__c');
               OppOtmfieldMap.put('Analysis Support','Analysis_Support__c');
               OppOtmfieldMap.put('BD/Development Partner','BD_Development_Partner__c');
        
        Map<String,String> projOtmfieldMap=new Map<String,String>();
               projOtmfieldMap.put('Sr. Client Insights Manager','Sr_Client_Insights_Manager__c');
               projOtmfieldMap.put('Client Insights Manager','Client_Insights_Manager__c');
               projOtmfieldMap.put('Data Manager','Ops_Manager__c');
               projOtmfieldMap.put('Lead Consultant','Lead_Consultant__c');
               projOtmfieldMap.put('Support Consultant','Support_Consultant__c');
               projOtmfieldMap.put('Analysis Support','Analysis_Support__c');
               projOtmfieldMap.put('BD/Development Partner','BD_Development_Partner__c');
        
            list<id> oppoIdList = new list<id>();
            map<id, id> oppoOtmMap = new map<id, id>();
            list<id> proMemList = new list<id>();
            map<id, id> oppIdProIdMap = new map<id, id>();
            list<id> proId = new list<id>();
            Map<Id,Opportunity> oppIdMap = new Map<Id,Opportunity>();
            Map<id, id> oppIdAccIdMap = new Map<id, id> ();
            Set<id> accId=new Set<Id>();
            
        for(OpportunityTeamMember otm : trigger.new){
                        OppoIdList.add(otm.OpportunityId);
                        oppoOtmMap.put(otm.Id, otm.OpportunityId);
            }
        
        map<id, list<Project__c>> oppIdProjectListMap = new map<id, list<Project__c>>();
        list<Opportunity> oppoList = [select Id, accountId, Project__c, (Select Id, Name from Project__r) From opportunity Where Id In: oppoIdList];
        system.debug('--oppoIdList--' +oppoIdList);
        for(Opportunity op : oppoList){
            proId.add(op.id);
            oppIdMap.put(op.id,op);
            accId.add(op.accountId);
            oppIdAccIdMap.put(op.id, op.accountId);
           // oppIdProIdMap.put(op.id, op.Project__c);
            oppIdProjectListMap.put(op.id, op.Project__r);
            }
                
        list<Project_Team__c> ptmListForInsert = new list<Project_Team__c>();
        system.debug('--proId--' +proId);
        system.debug('--accId--' +accId);
        system.debug('--oppIdProIdMap--' +oppIdProIdMap);
        system.debug('--oppIdAccIdMap--' +oppIdAccIdMap); 
        
        list<Project_Team__c> ptmList = [Select id, Account__c, Project__c, Member_Role__c, Team_Member__c From Project_Team__c Where Id In: proId];
        map<id, list<Project_Team__c>> proPtmMap = new map<id, list<Project_Team__c>>();
        
        for(project_Team__c ptm : ptmList){
        
            list<project_Team__c> tempList = proPtmMap.get(ptm.Project__c);
            
            if(templist!= null && templist.Size()>0){
                tempList.add(ptm);
                }else{
                        tempList = new list<project_Team__c>();
                        tempList.add(ptm);
                }
                proPtmMap.put(ptm.Project__c, tempList);
            }
        List<project_team__c> projList = new List<project_team__c>();
        for(OpportunityTeamMember otm : trigger.new){
        
            Boolean flag = false;
           
            List<project__c> listOfProj = oppIdProjectListMap.get(otm.OpportunityId);
            
            for(Project__c pro : listOfProj){
            List<project_team__c> listOfPrjTm = proPtmMap.get(pro.id);
            
            
            if(listOfPrjTm!= null){
                for(Project_Team__c ptm : listOfPrjTm){
                    if(otm.userId == ptm.Team_Member__c){
                        flag =true;
                        }
                    }
                }
                if(flag ==true){
                }else{
                    Project_Team__c ptm1 = new Project_Team__c();
                    ptm1.Team_Member__c= otm.userId;
                    ptm1.Member_Role__c = otm.TeamMemberRole;
                    ptm1.Account__c = oppIdAccIdMap.get(otm.OpportunityId);
					projList = proPtmMap.get(otm.OpportunityId);
                    ptm1.Project__c = projList[0].id;
                    ptmListForInsert.add(ptm1);
                    system.debug('--ptm1--' +ptm1);
                    }
            }}
        if(ptmListForInsert.size()>0){

        insert ptmListForInsert;
            }
            
  }
}

This will resolve the problem of illegal assignment.

Thanks!
kuldeep paliwalkuldeep paliwal
Apex trigger updateProjectTeammember caused an unexpected exception, contact your administrator: updateProjectTeammember: execution of AfterInsert caused by: System.NullPointerException: Attempt to de-reference a null object: Trigger.updateProjectTeammember: line 94, column 1  
Now it show an null pointer exception.. Thanks
kuldeep paliwalkuldeep paliwal
Amit their is no need of 93 and 94 line..
we already have the project so its easy after thinking i got this and its running and update all project to their related team member..
ptm1.Project__c = pro.id;
Thanx Hemant and LBK