Which of the following custom code use cases falls under Tier 1 extensibility guidelines?
A.
Implement a user or customer exit, for example SAPMV45A.
B.
Create a custom field on a DB table or CDS view via a released extension include.
C.
Apply an SAP note with manual corrections, for example a DDIC object from SAP Basis.
D.
Create a wrapper class around SAP objects that have not been released yet.
The Answer Is:
B
This question includes an explanation.
Explanation:
Comprehensive and Detailed Explanation from Exact Extract:
Tier 1 extensibility in ABAP Cloud corresponds to the safe and upgrade-stable extension layer.
Adding custom fields to released DB tables or CDS views via released extension includes is fully supported.
Using classic user exits (A), manual note corrections (C), or wrappers for unreleased APIs (D) belong to Tier 2 or Tier 3, and are not part of Tier 1 safe extensibility.
This guarantees that custom code in Tier 1 is cloud-ready, upgrade-stable, and based only on released extension points and APIs.
Verified Study Guide Reference: ABAP Cloud Extensibility Model – Three-Tier Extensibility Rules.
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