Status
Owner	The person responsible for driving this decision and documenting it. Type @ to mention people by name
Stakeholders	The business stakeholders involved in making, reviewing, and endorsing this decision. Type @ to mention people by name

Introduction

Purpose

This document defines the Business Rules framework governing the design, implementation and operation of business processes and systems within the Syensqo transformation program.

The Business Rules provide a structured and consistent approach to:

Ensuring alignment with the Syensqo operating model
Enforcing standardization across business units
Supporting consistent system behavior across SAP and integrated platforms
Enabling strong governance, traceability, and auditability

These rules form a foundational reference for all process design, system configuration, and integration decisions across the program.

Objectives

The objectives of the Business Rules are to:

Establish a single, consistent set of governing principles across all process domains
Ensure alignment with Syensqo’s strategic, operational and digital objectives
Enable standardized and scalable SAP S/4HANA implementation
Minimize customization and process variation
Ensure compliance with regulatory, financial, and operational controls
Provide clear guidance for design, build, and change activities
Support long-term maintainability and simplification of the solution landscape

Assumptions

The following assumptions apply to the definition and application of these business rules:

SAP S/4HANA is the core enterprise system of record
End-to-end processes are defined and governed centrally
Business rules apply to all in-scope entities and business units
Data ownership and accountability are clearly defined
Standard SAP functionality is preferred over custom development
Governance bodies (Design Authority, Process Owners) are in place and operational
Business processes are aligned with the Syensqo Operating Model

Constraints

The following constraints apply to the implementation of business rules:

Regulatory, legal, and statutory requirements may impose mandatory deviations
Local legal or tax requirements may require controlled exceptions
Legacy system dependencies may temporarily constrain full alignment
Organizational readiness and data maturity may influence implementation sequencing
Budget and timeline constraints may impact prioritization

All constraints must be documented and formally approved where deviations occur.

Business Rules Definition

Business Rules Overview

Business Rules define what must be adhered to when designing, implementing, and operating business processes and systems.

They apply across:

Business process design
SAP configuration and extensions
Data creation and management
Reporting and analytics
Integration and security

Business Rules are grouped into the following categories:

Functional Rules
System Design Rules
Data and Reporting Rules
Security and Integration Rules

These rules are mandatory unless formally exempted through governance.

Business Rule Nomenclature & Identification Standard

Each Business Rule must be assigned a unique identifier using the following format:

Element	Description	Example
POD	End-to-End Process Area	S2P, A2D, R2R
R	Denotes a Business Rule	Fixed
Sequential Number	Unique, zero-padded identifier	001, 002

Example: S2P-R001

Naming Rules

Rule IDs must be unique and never reused
Rule numbering must be sequential within each POD
Rule IDs must remain unchanged once approved
Retired rules remain visible for audit purposes
Rule titles must be:
- Clear
- Business-readable

Design Principles and Guidelines

The following principles guide the creation and application of all business rules.

General:

All rules must support a standardized, enterprise-wide solution
Rules must be based on business need and value
Rules must be applicable across all in-scope entities
Process definitions in the approved process repository are the single source of truth
Local workarounds and parallel solutions are not permitted
All changes must follow approved governance and change control

Data:

Data must be created and maintained at the point of origin
Manual data creation or adjustment must be controlled and approved
Data must not be altered after posting, except under approved scenarios
Data ownership and accountability must be clearly defined
Data quality and integrity must be enforced through controls

Solutions:

Multiple versions of the same process are not permitted
Language support is standardized, with limited approved exceptions
Custom development is allowed only where standard functionality cannot meet requirements
Solutions must support scalability and future business growth

Process:

Processes must be simple, standard and mandatory
There must be one approved way to execute each process
Processes must align with the Group Operating Model
Processes must be business-driven, not system-driven
Local variations are permitted only for legal or regulatory reasons
All deviations must be formally approved

Reporting:

A single source of truth must be maintained
Data must not be manipulated outside SAP
Reports must avoid hard-coded logic
Reporting must minimize manual intervention

User Interface:

SAP Fiori Launchpad is the standard user entry point
User experience must be consistent across devices
Navigation must align with approved process design
Access must be role-based and controlled

Development:

SAP standard functionality must be used wherever possible
Core SAP code must not be modified
Enhancements must follow approved extensibility principles
Custom development requires justification and approval

Security:

Access must be role-based and aligned with organizational structure
Segregation of Duties must be enforced
Authorizations must support audit and compliance requirements
Access changes must follow formal approval workflows

Integration:

Business process requirements drive integration design
Each interface must have a defined system of record
Standard SAP integration technologies must be used
Data must be encrypted and securely transmitted
Interfaces must prevent duplication and ensure data consistency
Business logic must not reside in middleware
Time zones must follow ISO standards
Error handling must be standardized

Simplification:

Eliminate unnecessary process variants
Reduce custom developments
Avoid duplication of functionality
Promote reuse of standard solutions
Design for long-term maintainability

Functional Rules

The functional rules will include Enterprise Structure, High Level functional configuration principles and specific functional rules. The intended audience for Functional Rules includes Business Process Leads, Process Specialists and Functional Consultants.

The Functional Rules are captured under the E2E Process Areas as below

Idea to Market (I2M)
Lead to Cash (L2C)
Source to Pay (S2P)
Plan to Fulfill (P2F)
Acquire to Decommission (A2D) Rules
Record to Report (R2R)
Budget to Forecast (B2F) Rules
Safety to Sustainability (S2S)

Idea to Market (I2M) Rules

Rule ID	Rule Description	Reason	Characteristic

Lead to Cash (L2C) Rules

Rule ID	Rule Description	Reason	Characteristic

Source to Pay (S2P) Rules

Rule ID	Rule Description	Reason	Characteristic

Plan to Fulfill (P2F) Rules

Rule ID	Rule Description	Reason	Characteristic

Acquire to Decommission (A2D) Rules

Rule ID	Rule Description	Reason	Characteristic

Record to Report (R2R) Rules

Rule ID	Rule Description	Reason	Characteristic
	Example - Every company code set up in the system must be a legal entity on its own.

Budget to Forecast (B2F) Rules

Rule ID	Rule Description	Reason	Characteristic

Safety to Sustainability (S2S) Rules

Rule ID	Rule Description	Reason	Characteristic

System Design Rules

The System Design Rules includes cross functional Process Design, User Experience, Data, Reporting, Development, Security, Interfaces & Integration, and Technology Rules. The rules are extracted from detailed approach and standards documents. Additional context and detail is available from the section of the approach / standards document referred to in the comments section.

Process Design Rules

The Process Design rules outlined in the Business Process Modelling Standard, define key aspects such as modeling elements, structure, grouping, storage, detailed modeling standards, naming conventions and object characteristics.

Rule ID	Rule Description	Category	Comments

User Experience (UX) Rules

The User Experience rules outlined in the UX Design document, cover key principles, the SAP Roadmap, an overview of the user interface and clients, theming, personalization and authorizations.

Rule ID	Rule Description	Category	Comments

Data Rules

The Data Rules are outlined in the Master Data Standards and Data Approach documents which focus on managing data integrity, quality, and governance within the system design. These rules emphasize data modeling, data definitions, data lifecycle management, and data standards.

Rule ID	Rule Description	Category	Comments

Reporting Rules

The Reporting Rules are outlined in the Reporting Design document, which encompass design principles, alignment with the SAP roadmap, standardized reporting metrics and tools, reporting vision, framework, access, metrics, and governance.

Rule ID	Rule Description	Category	Comments

Development Rules

The Development Rules are outlined in the Development Approach & Standards document and address several key areas, including development and coding standards and guidelines, ABAP programming rules and guidelines specific to S/4HANA, JAVA programming rules and guidelines for the HANA Cloud Platform, JavaScript programming rules and guidelines for SAP UI5 and standards and guidelines for SAP Cloud extensions.

Rule ID	Rule Description	Category	Comments

Security Rules

The Security Rules are outlined in the Security Profiles and Roles Design and detail the security approach along with key recommendations. This includes security compliance, application security, user provisioning, single sign-on, ABAP and non-ABAP authorization concepts, network security, communication security, front-end security, and database security.

Rule ID	Rule Description	Category	Comments

Interface & Integration Rules

The Interface and Integration Rules are outlined in the Integration Architecture & Cloud Integration Development Standard, outlining key integration principles and design rules. This includes integration fundamentals, permitted integration types, rules for integration domains and styles, software logistics and error handling.

Rule ID	Rule Description	Category	Comments

Technology Rules

The Technology Rules are outlined in the ........ and cover reference architecture, design rules, environment approach, sizing approach, security approach, high availability, disaster recovery, and technical conventions and standards.

Rule ID	Rule Description	Category	Comments

Other Rules

Other rules address a range of operational, compliance, and governance aspects essential for the effective functioning of the system.