SAP Custom Code Migration: Workflow and Evidence Guide

Decision context

SAP custom code migration is a critical phase in SAP S/4HANA adoption that requires precise understanding of existing ABAP code, its dependencies, and impact on business processes. Adranum supports this by ingesting comprehensive SAP evidence including ABAP code, DDIC, ATC results, and process-event data to create a detailed readiness profile.

Unlike generic migration tools, Adranum’s approach emphasizes governance, traceability, and human-in-the-loop decisions. It identifies unsupported or obsolete code, maps dependencies, and proposes remediation or retirement actions while preserving customer control over source and credentials.

This solution enables teams to generate reviewable code proposals and implementation packages, coordinate testing, and manage cutover with reconciliation and exact-state recovery. It is designed to integrate with existing SAP landscapes without replacing SAP licensing or Basis administration functions.

Ingesting and Analyzing SAP Custom Code Evidence

Adranum collects authorized SAP readiness data, ABAP source, DDIC metadata, ATC results, and abapGit repositories to build a comprehensive view of the custom code landscape. It also incorporates process-event and data-quality evidence to understand runtime behavior and business impact.

This evidence-driven ingestion allows identification of unsupported constructs, code coverage gaps, and potential incompatibilities with SAP S/4HANA. The system highlights missing inputs and flags unsupported or risky code segments for remediation or retirement decisions.

• Supports SAP standard readiness and ATC reports ingestion
• Analyzes ABAP source and dictionary objects for compatibility
• Incorporates process and data quality metrics to assess runtime impact

Mapping Dependencies and Impact Analysis

Adranum automatically maps observed and inferred dependencies among ABAP objects, data elements, and business processes. This dependency graph supports precise impact analysis for change decisions.

By visualizing keep, replace, remediate, or retire options, teams can prioritize remediation efforts and avoid unintended disruptions. The dependency mapping also assists in identifying impacted tests and process variants requiring validation.

This capability reduces risk by ensuring all related artifacts are considered before migration steps are executed.

• Generates dependency graphs linking code and data objects
• Supports impact analysis for remediation and retirement decisions
• Identifies affected tests and process variants for validation

Generating Reviewable Code and Data Proposals

Adranum produces proposed code and data changes as reviewable artifacts, allowing developers and architects to validate remediation approaches before compilation and runtime testing.

These proposals are not final until customer-controlled compilation and runtime checks succeed, ensuring that generated code aligns with specific system configurations and business requirements.

This approach maintains governance and reduces errors by involving human approvals and iterative refinement of migration artifacts.

• Creates reviewable ABAP and DDIC change proposals
• Supports iterative validation before production deployment
• Records human approvals to maintain governance

Packaging and Coordinating Migration Activities

The software generates content-addressed implementation packages that include code changes, impacted tests, and reconciliation scripts to streamline migration execution.

Adranum coordinates cutover activities with reconciliation and continuity processes, supporting exact-state recovery if rollback or revalidation is necessary.

This orchestration capability helps maintain system stability and business continuity throughout the migration lifecycle.

• Generates content-addressed implementation packages
• Coordinates cutover with reconciliation and continuity
• Supports exact-state recovery and rollback

Maintaining Customer Control and Security

Adranum allows signed customer operators to retain raw service data, source code, and credentials within customer infrastructure, minimizing data exposure risks.

Only bounded commands, hashes, aggregate outcomes, and compile/runtime/test receipts are transmitted externally, preserving security and compliance requirements.

This design respects customer ownership of production environments and credentials, aligning with SAP governance and security policies.

• Keeps raw data and credentials inside customer infrastructure
• Returns only bounded commands and aggregate outcomes
• Supports compliance with SAP and enterprise security policies

What the workflow must cover

• Comprehensive Evidence Ingestion. Adranum ingests multiple SAP evidence types including ABAP source, DDIC metadata, ATC results, and process-event data to build a detailed readiness profile.
• Dependency Mapping and Impact Analysis. Automatically maps dependencies among code, data, and processes to support informed remediation and retirement decisions.
• Reviewable Code and Data Proposals. Generates proposed changes for human review and approval before compilation and runtime validation.
• Implementation Package Generation. Creates content-addressed packages bundling code changes, tests, and reconciliation scripts for controlled migration deployment.
• Cutover Coordination and Recovery. Orchestrates cutover with reconciliation, continuity, and exact-state recovery to maintain system stability.
• Customer Data Sovereignty. Ensures raw data and credentials remain on-premise or in customer infrastructure, transmitting only bounded commands and results externally.

Implementation workflow

Start with a bounded customer scenario and explicit acceptance criteria. Preserve native SAP permissions and accountable review while the software creates a repeatable evidence chain.

1. Collect authorized SAP readiness, ATC, ABAP, DDIC, and process-event evidence from the existing system landscape.
2. Analyze ingested evidence to identify unsupported code, missing inputs, and coverage gaps.
3. Map dependencies among ABAP objects, dictionary elements, and business processes to assess impact.
4. Generate reviewable code and data remediation proposals based on analysis and dependency mapping.
5. Obtain human approvals on proposed changes and iterate as needed with compilation and runtime tests.
6. Package approved changes into content-addressed implementation bundles including impacted tests and reconciliation scripts.
7. Coordinate cutover execution with reconciliation, continuity, and exact-state recovery mechanisms.

Evidence to require

A transformation claim should resolve to observable artifacts, decisions, and execution receipts. Ask for the following evidence in a representative evaluation:

• SAP Readiness Check reports
• ABAP Test Cockpit (ATC) results
• ABAP source code and DDIC metadata
• abapGit repository snapshots
• Process-event logs and variant analyses
• Data quality metrics and reports
• Dependency graphs and impact matrices
• Code and data remediation proposals
• Implementation package manifests
• Cutover and reconciliation execution receipts

Boundaries and non-claims

Adranum separates analysis, proposal, human review, package creation, customer-local validation, and production execution. A later state never rewrites the evidence that supported an earlier decision.

• Does not replace SAP licensing or Basis administration functions.
• Generated code proposals require customer compilation and runtime validation before production use.
• Does not provide official SAP certification or clean-core certification.
• Does not substitute specialist testing tools for all use cases.

Public comparison sources

Competitor statements are limited to current public materials. Verify them during procurement because products and packaging change.

• Custom Code Migration Guide for SAP S/4HANA 2023
• SAP Custom Code Migration Services & Tools
• Custom Code Migration - SAP Fiori Apps Reference Library
• SAP Discovery Center
• Get started with the ABAP custom code migration process

Buyer checklist

• What SAP evidence types does the solution ingest and analyze?
• How does the tool identify unsupported or obsolete custom code?
• Can the system map dependencies across code, data, and business processes?
• How are remediation proposals reviewed and approved?
• Does the solution support packaging and coordination of migration activities?
• How does the software maintain customer data and credential security?
• What are the limitations regarding SAP certification and licensing?
• How does the tool integrate with existing SAP governance and transport processes?