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Introduction

In On Stack extensibility, Enhancements can be created using BAdi Enhancement Implementation in Developer Extensibility.

Developer extensibility using SAP Cloud ABAP Environment for developer extensions.

Business Accelerator Hub

SAP Business Accelerator Hub provides a section for On Stack extensibility (key user extensibility and developer extensibility), to know list of SAP CDS views, APIs, Business Add-ins etc. are available with the release status.

On Stack Extensibility -> Business Add-ins

Search for required BAdi.

This BAdi is related to check purchase order before saving to create it.

Here it shows BAdi Definition and Enhancement spot.

BAdi can be used in both Key User and Developer Extensibility as both states of BAdi is in released state.

Methods and its Parameters

Developer Extensibility – BAdi Enhancement Implementation

Steps to Create Impelementation

Create New BAdi Enhancement Implementation

Chose BAdi Enhancement Implementation.

Add Name and description.

Add Enhancement Spot

BAdi Enhancement Implementation is created.

Choose BAdi Implementation to add Implementations.

Add BAdi Definition and Custom Class name

Add Implementation Class

Choose Implementation Class, add Custom Class name and its description

Implementation Class is created.

ZCL_CHECK_PO▸
CLASS zcl_check_po DEFINITION
PUBLIC
FINAL
CREATE PUBLIC .

PUBLIC SECTION.

INTERFACES if_badi_interface
INTERFACES if_ex_mmpur_final_check_po .

PROTECTED SECTION.
PRIVATE SECTION.
ENDCLASS.

CLASS zcl_check_po IMPLEMENTATION.

METHOD if_ex_mmpur_final_check_po~check.
ENDMETHOD.
ENDCLASS.

Implementation Class is added to Badi Implementation details

Logic can be added to implementation class

ZCL_CHECK_PO▸
CLASS zcl_check_po DEFINITION
PUBLIC
FINAL
CREATE PUBLIC .

PUBLIC SECTION.

INTERFACES if_badi_interface
INTERFACES if_ex_mmpur_final_check_po .

PROTECTED SECTION.
PRIVATE SECTION.
ENDCLASS.

CLASS zcl_check_po IMPLEMENTATION.

METHOD if_ex_mmpur_final_check_po~check.
IF purchaseorder-supplier EQ ‘0000100005’.
APPEND VALUE #( messagetype = ‘E’ messagevariable1= |Choose another Supplier] ) TO messages.
ENDIF.
ENDMETHOD.
ENDCLASS.

Navigate to Create Purchase Order (ME21N)

Provide the required details and check

Error appeared as per logic written.

Add breakpoint in the implementation class to debug.

Place cursor on the logic, choose right click.

Break point is added

Break point can be added in the logic, and it triggers when creating purchase order in the Create Purchase Order (ME21N).

Conclusion

In Developer Extensibility, BAdi Enhancement Implementation can be created and deleted.

Custom Implementation can be captured in TR’s and those can be moved to test, production systems.

This custom implementation can also be debugged.

References

• Extensibility | SAP Help Portal
• Developer Extensibility | SAP Help Portal
• Implementing BAdI Enhancement in SAP S/4HANA Cloud Public Edition | SAP Help Portal

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