Apex Developer Guide
Approval Process – Biswajeet Samal's Blog
Lightning Web Components and Salesforce Data - Handler Server Errors - Salesforce Developer Community
Demystifying addError – My Salesforce adventure
How to write apex test class to cover the apex trigger addError() message - TheBlogReaders.com
Srinivasan Software Solutions : Apex Triggers
Apex sharing example | Trigger to validate if users have access to that record and to give access to the user when record is created using Apex Sharing | Salesforce Security
Apex Developer Guide
Demystifying addError – My Salesforce adventure
APEX: Show error messages in UI triggered by 'After Undelete' trigger | IdeaExchange
36 Trigger Scenarios in Salesforce with Solution – Part 2 - Salesforce Geek
using addError and sending emails in Apex - Salesforce Developer Community
Handle Trigger and Validation Rule Error in Lightning Component – Biswajeet Samal's Blog
Hyper link in addError() method. - Salesforce Developer Community
trigger - How to show a hyperlink in error message in lightning? - Salesforce Stack Exchange
I need to show error message on Feed Action button when Case Type is empty, else I should show the Commentbody and sendnotification buttons to create Case Comment. - Salesforce Developer Community
Trigger to display an error on Contact creation if the Account has more than 2 contacts
Trailhead
Exception Handling and Fault Connector in Flow - Salesforce Time
New line in String variable Adderror method in Apex Trigger - Salesforce Developer Community
Salesforce | Display error message returned by Trigger with enter key Webner Blogs - eLearning, Salesforce, Web Development & More
Salesforce ContentDocumentLink Trigger - Salesforce Code Crack
Where to place Validation code in an Apex Trigger? | Andy in the Cloud
Salesforce | Adding error messages to field inputs - Forcetalks
