What is 'unit ID' in SAP BC-ABA - ABAP Runtime Environment?

unit ID - Overview

• Component: BC-ABA

• Component Name: ABAP Runtime Environment

• Description: Content of a unit key. Valid unit IDs are defined in the database table T006.

unit ID - Details

• 
  Key Concepts: 
  A unit ID is a unique identifier assigned to each ABAP program in the SAP system. It is used to identify the program and its associated objects, such as function modules, classes, and other components. The unit ID is also used to track changes made to the program over time. 
  
  How to use it: 
  The unit ID is used to identify an ABAP program in the SAP system. It can be found in the program's source code or in the ABAP Dictionary. The unit ID can also be used to track changes made to the program over time. 
  
  Tips & Tricks: 
  When making changes to an ABAP program, it is important to update the unit ID in order to ensure that all changes are tracked properly. This will help ensure that any future changes are tracked accurately. 
  
  Related Information: 
  The unit ID is part of the BC-ABA ABAP Runtime Environment component of SAP. For more information on this component, please refer to the SAP documentation.