Question: what is the difference between pass by value and pass by reference in sap abap?
Answer: When we PASS lv_var by VALUE , the actual value of lv_var is copied into VAR. When we PASS lv_var by REFERENCE , the reference or the memory address of lv_var is passed to the Function module. So VAR and lv_var will refer to the same memory address and have the same value.