I am trying to update the status field of all the related child (Recipe Sheet Items) for a given parent (Recipe Sheet) when the status is updated to 'Void' and I am trying to make this trigger handle bulk. I get this error when I try to save it.

"Error: Compile Error: Method does not exist or incorrect signature: [LIST].keySet() at line 5 column 20"

Can someone please help me write this code correctly?

trigger SyncStatus on Recipe_Sheet__c(after update) {


     Set<ID> ids = Trigger.new.keySet();
     list<Recipe_Sheet__c> updatedParents = [SELECT Id, 
                 (SELECT Id, Recipe_Sheet__c, Status__c 
                  from Recipe_Sheet_Items__r ) FROM Recipe_Sheet__c
                 WHERE Id in :ids];
         List<Recipe_Sheet_Item__c> childrenToUpdate = new List<Recipe_Sheet_Item__c>();

         //Then loop through each parent object in 'updated parent
         for ( Recipe_Sheet__c p : updatedParents) 

                //and loop thru each kid in the child set}
               for(Recipe_Sheet_Item__c kid : p.Recipe_Sheet_Items__r) 
                         ///update logic from above
                          if( kid.Status__c !=  p.Status__c)
       kid.Status__c =  p.Status__c;
       if( !childrenToUpdate.isEmpty)
            update childrenToUpdate;

2 Answers 2


Trigger.New is a list of sObjects. If you want a set of keys you want to use trigger.newMap. This is a map of the objects in trigger.new with the ID as the key and the object as the value. So you are trying to call keyset(), which is a map method, on a list.

From the docs

Trigger.new - Returns a list of the new versions of the sObject records.

Trigger.newMap - A map of IDs to the new versions of the sObject records.


  • Thanks. Now I receive this error: "Compile Error: Initial term of field expression must be a concrete SObject: LIST<Recipe_Sheet_Item__c> at line 28 column 12" It is referring to the line " if(!childrenToUpdate.isEmpty)", any thoughts here?
    – Grace
    Jul 8, 2014 at 15:02
  • add parentheses. .isEmpty() Jul 8, 2014 at 15:03

Trigger.new is a List. List do not have keySet() Method

  • Trigger.new doesn't return a list, it is a list.
    – martin
    Oct 16, 2015 at 6:15

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.