Trailhead Apex Triggers

Create an Apex trigger for Account that matches Shipping Address Postal Code with Billing Address Postal Code based on a custom field.

For this challenge, you need to create a trigger that, before insert or update, checks for a checkbox, and if the checkbox field is true, sets the Shipping Postal Code (whose API name is ShippingPostalCode) to be the same as the Billing Postal Code (BillingPostalCode).

• The Apex trigger must be called 'AccountAddressTrigger'.
• The Account object will need a new custom checkbox that should have the Field Label 'Match Billing Address' and Field Name of 'Match_Billing_Address'. The resulting API Name should be 'Match_Billing_Address__c'.
• With 'AccountAddressTrigger' active, if an Account has a Billing Postal Code and 'Match_Billing_Address__c' is true, the record should have the Shipping Postal Code set to match on insert or update.

1)Create a new custom field in account object of type checkbox and make default as checked,field label should be Match Billing Address.

2)Write a trigger on account object and make sure it should be active while taking the challenge.

trigger AccountAddressTrigger on Account (before insert,  before update) {

       for(Account a:Trigger.New){

            If (a.Match_Billing_Address__c && a.BillingPostalCode!= Null) {

                a.BillingPostalCode= a.ShippingPostalCode ;  

        } 

    }

}