How to add error message in a Salesforce Apex Trigger?

Tagged: Error Notification, Salesforce Apex, Salesforce Records, Salesforce Trigger

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How to add error message in a Salesforce Apex Trigger?

Posted by PRANAV on August 8, 2016 at 1:45 pm

Hi All,

How to add error message in apex trigger ?

Thanks

shariq replied 5 years, 7 months ago 5 Members · 7 Replies
7 Replies

Abhinav

Member
August 8, 2016 at 1:55 pm

Hi Pranav,

Test__c trigObj = trigger.newMap.get(Test.id);
if(trigObj != null){
trigObj.addError('Cloned record should not have the same period as that of Parent record');
}
shariq

Member
July 17, 2017 at 1:48 pm
Hi Pranav,

Yes you can add error messages in triggers by using Salesforce trigger addError method.
For Example - Sobject.addError('Error Messages');
- This reply was modified 6 years, 9 months ago by shariq.
Ratnakar

Member
April 10, 2018 at 2:22 pm

ApexPages.addmessage(new ApexPages.message(ApexPages.severity.FATAL,'Enter Your error message here'));
PRANAV

Member
April 10, 2018 at 3:25 pm

Hi Ratnakar,

Whatever you are saying is not correct.

The solution given by Abhinav is correct and helpful. And the issue resolves previously.

I appreciate your response if it works for the same but the reply provided by you works for VF page only.

Thanks
shariq

Member
September 20, 2018 at 7:00 pm

Hi,

Try this -

obj.addError(‘error’);

Hope this helps.
Parul

Member
September 20, 2018 at 7:11 pm

Adding some points:

If you want to print error message on particular field . you can use the following syntax
FieldName.addError('Write error message');
Display error message on visual force page include <apex:pageMessages /> tag in vf page

Thanks
shariq

Member
September 20, 2018 at 9:37 pm

Hi,

This is the code snippet -

trigger AvoidDuplicateAccounts on Account (before insert, before delete)
{
Set<String> setAccountName = new Set<String>();
for(Account objAccount: [Select Name from Account])
setAccountName.add(objAccount.Name);
for(Account objAccount: Trigger.new)
{
if(!setAccountName.contains(objAccount.Name))
{
setAccountName.add(objAccount.Name);
}
else
{
objAccount.Name.addError('Account with same name Exists');
}
}
}

Hope this helps