SOQL 101 Error, DML 151 Error, Apex Trigger

That moment happens to every Salesforce developer: something that worked perfectly for weeks suddenly stops working in production. It was a little trigger that didn't look dangerous to me. It worked perfectly... Until the day it didn't. This is the story of how a simple trigger led to SOQL limit errors, recursion loops, and bulk-update failures. I then rebuilt everything into a clean, scalable trigger framework that has never failed since. The Easy Trigger That Became a Mess

In Salesforce development, an Apex class is used to create objects that hold values of fixed data types. For example, an Integer variable stores only integers, and a String variable stores only text. However, when a developer needs to return multiple values of different types  — such as a mix of Contact fields, Account fields, booleans, or even custom strings — a standard SObject is not enough. This is where a Wrapper Class  becomes extremely useful. What Is a Wrapper Class?