Can anybody help me solve this issue?
I want to check if the user selects duplicate value of the picklist when many records are displayed to edit and show the error message and stop if duplicate is found.
I wrote a apex method for the same. Now how to take the return value to check the condition to show the error message in javascript?
My apex method is :
public Integer getcheckDuplicate() {
       // RequestsList = new List<Reclassification_Request__c>();
        
        
        for(integer i=0 ; i<RequestsList.size();i++) {
             system.debug('Entering First For Loop');
            for( integer j=(i+1) ; j<RequestsList.size() ;j++) {
                Reclassification_Request__c reclassreqI = RequestsList.get(i);
                system.debug(reclassreqI);
                Reclassification_Request__c reclassreqJ = RequestsList.get(j);
                system.debug(reclassreqJ);
                if(reclassreqI.Request__c != 'Other') {
                    if(reclassreqI.Request__c == reclassreqJ.Request__c) {
                        system.debug('Duplicate Found');
                       // ApexPages.addmessage(new ApexPages.message(ApexPages.severity.WARNING,'Error:Priority may not be duplicated.'));         
                        ErrorCount =  ErrorCount+1; 
                                                 
                    } 
                }            
            }
        } 
        return ErrorCount;          
      }

I want the check the value of ErrorCount and show the error message. But the value is always 0. Why? Any help please...