How to Customize Fields & Logic in SAP Fiori Apps Library in 4 Simple Steps

Introduction

All Fiori apps can be found in the SAP Fiori Apps Library. It showcases app details, directories, roles and configurations. Most organizations have customizing requirements of fields and logic in Fiori applications. This is useful to match apps with specific business needs.

The Fiori apps library custom fields and logic empower you to:

• Add new fields to apps
• Apply validation rules
• Change default values
• Enhance UI behavior

In this blog, we detail 4 easy steps to tailor fiori apps library custom fields and logic. You will discover efficient techniques that are applicable to SAP administrators, developers, and system analysts alike.

Step 1: Find the App and Fields

Moreover, Before you modify the app, find it and the fields you want to customize.

How to Identify Fields

• Open the Fiori Apps Library
• Ensure App ID and backend object are correct
• Check available fields in the app metadata
• Determine necessary fields for business logic

Tools to Use

Tool	Purpose
Fiori Apps Library	Locate app metadata and field information
SAP GUI / SE11	possible bug: check backend if custom fields is there or not
UI5 Inspector	UI elements and Data binding inspection

Tip: Save the existing fields and their dependencies before you change anything.

Step 2: Add Custom Fields

You can introduce fields without affecting standard apps.

Methods to Add Fields

• In App Customization: Add fields directly on the app interface
• Custom Fields and Logic App:
  • Add new fields
  • Map them to backend tables
  • Set labels and field types
• CDS Views & Annotation: Introduce the fields in CDS View for UI display

Example Table

Step	Action
1	Open the Custom Fields and Logic App
2	Select business object associated with fiori app
3	Write in “Add Field”, then choose type and the name of the field
4	Enable and assign field at UI

Tip: Enable fields in backend and front-end simultaneously.

Step 3: Implement Custom Logic

Once you’ve built your fields, add some business logic.

Types of Logic

• Defaults: Populate form elements using users role or data
• Validation Rules: Confirm that data is being entered correctly
• Calculated Logic: Fill in fields using other information
• Custom Calculate: Not in standard apps

How to Implement

• Open Custom Fields and Logic App
• Choose the field or business object
• Define triggers: on-create, on-update, on-save
• Implement logic with ABAP or annotations@(S/4HANA Enterprise Management) Model the Data Integration Layer

Tip: Try logic out in a sandbox before moving into production.

Step 4: Apply Changes and Test it out!

Test those changes after applying and see the magic.

Activation

• Enable both the backend and UI updates

Testing Steps

Test Type	Purpose
Functional Test	Field Edit on Fiori app (Ensure field is visible)
Backend Test	Confirm data stored correctly
Role Test	Verify access by business roles
UI Test	Validate usability and error messages

Tip: Get business users to help with real-world testing.

Conclusion

Enhancing fiori apps library custom fields and logic enhances usefulness of Fiori app. Finally, you can instantly implement the tweaks by following four basic steps find fields, however add fields, apply logic and test.

SAP Custom development at Cremencing Solutions. We develop, extend Fiori apps, create new functionality and customize UI.

Check our Blog on SAP Fiori Custom App

FAQs

Q1: Fiori apps library custom fields and logic?
With the Custom Fields and Logic App you can add fields and logic to SAP Fiori apps.

Q2: How can I add fields without changing the standard app?
Yes. SAP provides the ability to extend without modifying standard code.

Q3: How do I verify the custom logic?
Test in a sandbox with plain functional moreover, backend tests also role UI checks.

Q4: Are these customizations upgrade-safe?
Yes. SAP provides transportable change through the Custom Fields and Logic App.

Q5: How about UI/UX customization, would Cremencing Solutions be able to provide Fiori-customization?
Yes. End-to-End Services for Custom Fields, Logic and Fiori UI in SAP S/4HANA.

Resources & Updates

SAP Fiori Apps Library
Custom fields and the logic app documentation
SAP Community Blogs