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Mergers & Acquisitions · Oracle Fusion · HCM · ERP · SCM · EPM · DMOne™ · OIC · Multi-Source

M&A Data Integration
& Migration Services

Mergers, acquisitions, and divestitures impose data integration and migration deadlines that the rest of the programme does not — legal completion dates that cannot move, multiple source systems with conflicting master data, and coexistence periods that require both old and new systems to remain accurate simultaneously. eAppSys delivers the data workstream for Oracle Fusion M&A programmes — source assessment, entity mapping, DMOne™ migration, OIC integration, and cutover management.

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Home › Managed Support › M&A Data Integration & Migration

What eAppSys Delivers

Six services — covering the M&A data workstream end to end

The data integration and migration workstream in an M&A programme is distinct from a standard implementation — it involves multiple sources, conflicting master data, fixed legal dates, and coexistence periods. eAppSys has designed these six services specifically for that context.

Source System Assessment

Profile every source system — ERP, HR, finance, and supply chain — before a transformation rule is written. Data quality issues, volume, and structural mismatches identified early, not at cutover.

Entity and Master Data Mapping

Map acquiring and acquired entity structures — legal entities, chart of accounts, cost centres, item codes, supplier master, and employee identifiers — into the target Oracle Fusion model. Conflicts resolved before loading begins.

Data Migration — DMOne™

All agreed data objects migrated via DMOne™ using FBDI and HDL — from multiple sources, on a controlled schedule, with iterative load cycles and reconciliation to approved control totals.

Integration Build

OIC integrations between legacy source systems and Oracle Fusion — for parallel running periods, interim data feeds, and coexistence scenarios. Built, tested, and monitored before go-live.

Data Reconciliation and Sign-Off

Finance and HR reconcile migrated data to source control totals at each migration cycle. Go-live is not authorised until the designated data owners have signed off the reconciliation report.

Cutover Management

Detailed cutover runbook, multiple rehearsals, and gate-controlled go-live. The cutover date in an M&A is often fixed by legal completion — eAppSys de-risks it well in advance.
M&A Scenarios

Six scenarios — each with a different data challenge

The data workstream looks different depending on the M&A structure. eAppSys has delivered each of the four scenarios below.

Acquisition — Target onto Oracle Fusion

An acquired business running on SAP, Workday, or a legacy ERP is migrated onto the acquirer's Oracle Fusion platform. Employee records, supplier master, open transactions, and historical balances migrated. Integration maintained during the coexistence period.

Merger — Two Oracle Fusion Instances Consolidated

Two Oracle Fusion environments — each with their own chart of accounts, legal entities, and master data — consolidated into a single target instance. Duplicate master data resolved. Historical data from both instances migrated.

Divestiture — Carve-Out onto a New Platform

A divested business unit carved out of the parent Oracle Fusion instance. Relevant entities, employees, suppliers, balances, and open transactions extracted and migrated to a standalone platform — with a clean data cut at legal completion.

System Replacement During M&A

An M&A event triggers a legacy system replacement — an acquired business on an end-of-life ERP is migrated directly to Oracle Fusion as part of the integration programme. Data migration and Oracle Fusion implementation delivered in parallel.

Divestiture — Stand-Up on a New Oracle Fusion Instance

A business unit is sold by its parent — which runs Oracle Fusion — and the acquiring organisation wants to establish a new, standalone Oracle Fusion instance for the carved-out entity. The divested business has no Oracle Fusion of its own. eAppSys delivers both the carve-out data extraction from the parent instance and the implementation and data migration onto the new Oracle Fusion environment — treating the two workstreams as a single programme with one cutover at legal completion.

Acquisition — Non-Oracle or Oracle EBS Business onto an Existing Oracle Fusion Instance

An acquiring organisation already runs Oracle Fusion Cloud. The acquired business runs on a non-Oracle system — SAP, Workday, Sage, NetSuite, or similar — or on Oracle E-Business Suite. The acquired entity must be onboarded onto the acquirer's existing Oracle Fusion instance as a new legal entity, business unit, and set of operating organisations. eAppSys delivers the entity structure design, chart of accounts mapping, master data migration from the non-Oracle or EBS source, and the integration workstream — bringing the acquired business onto the acquirer's Fusion instance cleanly at legal completion without disrupting the existing Fusion environment or its current users.

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The Data Challenges

Where M&A data programmes most commonly run into difficulty — and how eAppSys addresses each

Master Data Conflict

Duplicate supplier records, overlapping employee national identifiers, conflicting item codes, and mismatched chart of accounts between acquiring and acquired entities.

How eAppSys addresses it

Profiled before a transformation rule is written. Deduplication rules agreed with data owners. Resolved in the source before loading begins — not after.

Fixed Legal Completion Date

The cutover date is often fixed by legal completion and cannot move — regardless of data quality or programme readiness.

How eAppSys addresses it

Cutover rehearsals begin early. Go/no-go criteria are defined and agreed. Data quality issues that cannot be resolved before cutover are risk-accepted in writing by the data owners .

Coexistence Period Complexity

During the integration period, data may need to flow between legacy systems and Oracle Fusion simultaneously — creating reconciliation and consistency challenges.

How eAppSys addresses it

Integration workstream designed for the coexistence period specifically — not just the end state. Monitoring, alerting, and reconciliation built into the OIC integration from the start.

Incomplete Source Data

Acquired businesses often have incomplete or inconsistently maintained master data — missing mandatory fields, inactive records still in use, and historical data gaps.

How eAppSys addresses it

Source profiling at programme start. Remediation plan agreed with the acquired business data owners. Migration scope adjusted where historical data cannot be recovered.

Delivery Approach

How the M&A data workstream is delivered — seven stages

Each stage has defined outputs and a gate before the next begins. Cutover rehearsals are built into the schedule from the start — not added at the end when the legal date is close.
01

Assess

Source system inventory — every system holding data that must move into Oracle Fusion. Data volumes, quality, and structural characteristics profiled. Migration scope and exclusions agreed.

05

Integrate

OIC integrations for the coexistence period built and tested — data feeds, reconciliation interfaces, and interim reporting connections between legacy and Oracle Fusion.

02

Map

Entity mapping: legal entities, chart of accounts, cost centres, item master, supplier master, employee identifiers. Conflict resolution rules agreed with the data owners from both organisations.

06

Rehearse

Two or more cutover rehearsals against the full runbook. Timing validated. Issues identified and resolved. Data owners briefed on their sign-off responsibilities before the live weekend.

03

Design

Migration design per data object and per source system. Integration design for the coexistence period. Cutover runbook drafted. Go/no-go criteria defined.

07

Cut Over

Live cutover executed against the rehearsed runbook. Go/no-go gate cleared by Finance and HR data owners. Hypercare begins immediately — same team, same day.

04

Migrate

DMOne™ iterative load cycles — sample data first, then full volumes. Reconciliation report produced at each cycle. Data owners review and approve before the next cycle runs.

Oracle Fusion Coverage

Data migration across Oracle Fusion HCM, ERP, and SCM — in the same programme

An M&A often requires data migration across multiple Oracle Fusion pillars simultaneously. eAppSys delivers HCM, ERP, and SCM migration in parallel — with a single programme governance structure and one reconciliation framework.

HCM — People and Payroll

  • Workers, assignments, grades, and positions
  • Payroll elements, element entries, and balance initialisation
  • Absence plans, entitlements, and absence records
  • Employee bank accounts and payment methods
  • HR lifecycle — terminations and rehires across the M&A event

ERP — Finance and Procurement

  • Chart of accounts mapping and legal entity structure
  • Supplier master — deduplication across both organisations
  • Open AP and AR balances and open purchase orders
  • Fixed asset register — combined or carved out
  • Opening trial balance at the legal completion date

SCM — Supply Chain

  • Item master — rationalisation across two item catalogues
  • On-hand inventory balances at cutover
  • Open sales orders and open purchase orders
  • Supplier master — consolidated and deduplicated
  • BOM structures and work definitions where manufacturing is in scope
Proprietary Accelerators

Built-in tools — included in every M&A data engagement

DMOne™
Multi-Source Migration

FBDI and HDL migration across multiple source systems — iterative cycles, conflict resolution, and reconciliation to control totals. Finance and HR sign-off before go-live.

DeployIQ™
OIC Integration

Controlled deployment of OIC integrations for the coexistence period — DEV to PROD with regression gate. Monitoring and alerting configured from day one.

MaskIQ™
Data Masking

Employee and financial data masked in all non-production environments throughout the M&A programme — GDPR-compliant from the first migration cycle.

ArchiveIQ™
Legacy Decommission

Legacy systems decommissioned cleanly on legal completion day. Historical data archived and accessible. Licences and infrastructure released on schedule.
Common Questions

M&A data integration and migration — questions worth asking

What does eAppSys do for M&A data integration and migration?
eAppSys designs and delivers the data integration and migration workstream for organisations going through a merger, acquisition, or divestiture — covering Oracle Fusion HCM, ERP, SCM, and EPM. This includes source system assessment, data profiling, entity mapping, migration of agreed data objects via DMOne™, integration build between legacy and target systems, and reconciliation sign-off before go-live is authorised.
Most M&A scenarios involve multiple source systems — different ERP platforms, multiple HR systems, and separate chart of accounts. eAppSys profiles each source system independently, maps each to the target Oracle Fusion structure, and manages the migration cycles per source through to a unified reconciliation. Conflicting master data — duplicate suppliers, overlapping cost centres, mismatched item codes — is identified and resolved before data is loaded into the target environment.
The most common risk is master data conflict — duplicate supplier records, employee records with overlapping national identifiers, and chart of accounts misalignment between the acquiring and acquired entity. A second significant risk is cutover timing — M&A data migrations often have a fixed legal completion date that cannot move, which requires the migration programme to be rehearsed and de-risked well in advance. eAppSys addresses both through early data profiling and multiple cutover rehearsals before the live cutover weekend.
Yes. eAppSys has migrated data from SAP, Workday, ADP, PeopleSoft, Sage, NetSuite, and bespoke legacy systems into Oracle Fusion Cloud. DMOne™ handles the source extraction, transformation, and FBDI/HDL loading into Oracle Fusion, regardless of the source system.
eAppSys manages the cutover as a rehearsed, gate-controlled process. A detailed cutover runbook covers every task, owner, and go/no-go decision point. Two or more cutover rehearsals are run before the live weekend. The go-live gate is not cleared until Finance and HR have signed off the data migration reconciliation — even under M&A timeline pressure.
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