I'm trying to deploy an apex trigger from sandbox to production. But when I test/validate in production I'm getting the error "variable does not exist" for the trigger's helper class:

Deployment Error Message

Trigger 'ZIPCodeAssignment:'

trigger ZIPCodeAssignment on Lead (before insert) {
if (Trigger.isBefore && Trigger.isInsert) {

and the helper class 'ZIPCodeAssignmentHelper:'

public class ZIPCodeAssignmentHelper {
public static void assignOwner(List<Lead> leadList){
    Map<String,String> NameSalesRepMap = new Map<String,String>();
    List<String> zipcodes = new List<String>();
    Id recordTypeId = Schema.SObjectType.Lead.getRecordTypeInfosByName().get('Uniform and Linens').getRecordTypeId();

    for (Lead record : leadList) {
        if (record.PostalCode != null) {
    for(WUL_Sales_Territory__c codes :[SELECT WUL_Sales_Rep__c, Name FROM WUL_Sales_Territory__c WHERE Name IN :zipcodes]){
        for (Lead record : leadList) {
            if (record.PostalCode != null && record.RecordTypeId == recordTypeId) {
                if (NameSalesRepMap.containsKey(record.PostalCode)) {
                    record.OwnerId = NameSalesRepMap.get(record.PostalCode);

Why is this happening? The helper class is listed as a dependency and the trigger fires properly in the sandbox as intended.

  • Can you manually add apex class in changeset? ZIPCodeAssignmentHelper – Pranay Jaiswal Jun 6 '19 at 19:18
  • That was it @PranayJaiswal, didn't even think to add the helper class to the changeset. Duh. Thank you! – Ben Green Jun 6 '19 at 19:41

When we deploy any Trigger or Apex class you have to add all the components viz., Objects, ApexClass, etc., those are being referred in the Trigger/Apex class. Use View and Add Dependent Components to a Change Set in such scenarios to include all dependent components while deploying a particular component.

In this case, while deploying the Trigger, you will also need to deploy the referenced Handler referred by the Trigger.

| improve this answer | |
  • 1
    +1. I took the liberty of adding few more details. Hope that works for you. – Jayant Das Jun 6 '19 at 19:56
  • 2
    Thanks Jayant, Much Appreciated. – Pranay Jaiswal Jun 6 '19 at 19:59

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