What is narrowing cast in SAP BC-ABA - ABAP Runtime Environment?

SAP Term: narrowing cast

• Component: BC-ABA

• Component Name: ABAP Runtime Environment

• Description: Also called narrowing cast. Assignment between reference variables, for which the static type of target variables is more specific than the static type of source variables, and the assignment is not checked until runtime. A narrowing cast must always be executed explicitly. There are assignments with the casting operator ?= and constructor expressions with the casting operator CAST. Down casts are possible using the INTO addition of the statement WHEN TYPE of a case decision with CASE TYPE OF. See also, up cast.

Smart SAP Assistant

• Key Concepts: 
  Narrowcasting is a feature of the ABAP Runtime Environment (BC-ABA) in SAP that allows users to send targeted messages to specific users or user groups. It is used to send notifications, alerts, and other messages to users who need to be informed about certain events or activities. 
  
  How to use it: 
  Narrowcasting can be used in a variety of ways. It can be used to send notifications about system changes, updates, or maintenance activities. It can also be used to send alerts about critical events or activities that require immediate attention. Additionally, it can be used to send reminders about upcoming tasks or deadlines. 
  
  Tips & Tricks: 
  When using narrowcasting, it is important to ensure that the messages are targeted correctly and sent to the right users or user groups. Additionally, it is important to ensure that the messages are clear and concise so that they can be easily understood by the recipients. 
  
  Related Information: 
  For more information on narrowcasting in SAP, please refer to the official SAP documentation on the topic. Additionally, there are several online resources available that provide additional information and tips on how to effectively use narrowcasting in SAP.