What is 'obsolete ABAP (non-Unicode)' in SAP BC-ABA - ABAP Runtime Environment?

obsolete ABAP (non-Unicode) - Overview

• Component: BC-ABA

• Component Name: ABAP Runtime Environment

• Description: Obsolete ABAP is a language version of an ABAP program in which the Unicode checks are ignored. A program with this language version cannot be executed in Unicode systems. In the current SAP NetWeaver release, only Unicode systems are supported. Therefore, obsolete ABAP can no longer be used.

obsolete ABAP (non-Unicode) - Details

• 
  Key Concepts: 
  Obsolete ABAP (non-Unicode) is a component of the BC-ABA ABAP Runtime Environment. It is an older version of the ABAP programming language that was used to develop applications for SAP systems prior to the introduction of Unicode. It is no longer supported by SAP and should not be used for new development. 
  
  How to use it: 
  Obsolete ABAP (non-Unicode) should not be used for new development. If you are working with an existing application that was developed using this version of ABAP, you can continue to use it, but you should consider migrating it to a newer version of ABAP. 
  
  Tips & Tricks: 
  When migrating an existing application from Obsolete ABAP (non-Unicode) to a newer version of ABAP, it is important to thoroughly test the application after the migration to ensure that all functionality is working as expected. 
  
  Related Information: 
  For more information about Obsolete ABAP (non-Unicode), please refer to the SAP Help Portal at https://help.sap.com/viewer/product/ABAP_RUNTIME_ENVIRONMENT/7.50/en-US.