The document outlines the off-shore engagement of Oak Systems Pvt. Ltd. with a leading Caribbean bank to provide user acceptance testing support for the migration of their Flexcube core banking system and related interfaces. The project involved upgrading various system components and required extensive collaboration between the bank's team and Oak Systems SMEs, delivering additional test cases and adhering to strict quality commitments. The engagement ran from August 2019 to May 2020, successfully completing the migration process without cost overruns and maintaining high-quality outputs.

1. Banking Case Study –
UAT Support for CBS Migration
Oak Systems Pvt. Ltd.
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2. Engagement Background
 Customer: A leading bank in the Caribbean
 The Bank is using FLEXCUBE Core Banking System with IBM P6, DB Oracle 10g for their Banking Business
Operations.
 The Bank planned to migrate the Hardware, DB and the CBS software from the existing one to the newer
supportive version with the “AS IS” functionality.
 IBM P6 to IBM P8
 Oracle DB 10g to 12g
 CBS FCv7.1 to FCv12.3
 There were 14 interface applications along with CBS that needed consideration during the Migration.
 The Bank team needed the Test Process and Test suite build & Execution support for the CBS and
interfaces.
 The Bank wished to review the Test suite and participate in the Test execution under the guidance of the
Oaksys SMEs for User Acceptance Testing of FLEXCUBE CBS and interfaces.
 Timeline: Aug 2019 to May 2020.
 Engagement Type: Off-Shore delivery.
 Status: Completed.
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3. Test Team & Size
Bank CORE
Team - 6
Bank
Extended
Team - 4
Test Process Manager
Oaksys
Test Manager
Bank Team
Test Lead
Oaksys - 6
SME’s
Impln Team - 4 SME’s
Bank Team - 4
Oaksys Project
Manager for the
Project
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4. Test Plan Support – Areas & Activities
Services extended to the Customer for the implementation of the FLEXCUBE UBS
(Universal Banking System) core banking application upgrade that will cover the
following aspects of the Project:
 Test Planning including documentation
 Test Preparation
 Remote support to the Client’s team for test execution
Activities involved in the above process are:
 Preparation of Test Plan documents
 Writing of test scenarios/cases for the above mentioned modules
 Writing of test scenarios for the above mentioned interfaces/migration
 Remote Test Execution support to the Client during test execution
 Defect logging and tracking during test preparation
 Review and support of defects during the Client’s Team test execution
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5. Test Plan Support - Scope
Scope is to provide UAT Test Support (functional) with the following..
Modules
✓ Core – HO, Branch, Currencies,
SMS and related options
✓ CIF
✓ CASA ✓ Overdraft – CASA
✓ Term Deposits ✓ Consumer Lending
✓ Teller ✓ Funds Transfer
✓ Money Market ✓ ICCF (Interest & CD)
✓ Tax (VAT) – Converted to IC ✓ General Ledger
✓ Standing Instructions ✓ ELCM
✓ Security Maintenance System ✓ Bank specific customizations
✓ Utility Payment
Interfaces
✓ Integration Gateway/Custom
Suite User Perpetual – 13
Interfaces
✓ ATM Interface/ Account
Perpetual
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6. Test Plan Support – Deliverables
Planned
Deliverables
Test
Strategy /
Approach
Master
Test Plan
Detailed
Test Plan
Test
scenarios
(HLTC)
Test cases
(DLTC)
Progress
Reports
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Quality Commitment
On the Test preparation, Oaksys will ensure that the Client’s
business functionality coverage error record is limited to less than 5%.
This does not apply to scope changes and corrections post the Client’s
review.

7. Test Deliverables by Oaksys
Description of Tasks Status
Test Strategy ✓ Delivered
Test Approach ✓ Delivered
Master Test Plan ✓ Delivered
Gathering Business Requirements ✓ Delivered
Documentation of Business Requirements ✓ Delivered
Review of Business Requirements with Business Heads/SME’s ✓ Delivered
Test Scenarios/High Level Test Cases (HLTC) ✓ Delivered
Test Cases/Detailed Level Test Cases (DLTC) ✓ Delivered
Progress Reports for preparation ✓ Delivered
Peer review of all the deliverables as per Process Plan ✓ Delivered
Process Related Tasks
Understanding the Bank PM & Test Process ✓ Delivered
Preparation of Estimates based on the Business depth ✓ Delivered
Resource planning and allocation for the tasks ✓ Delivered
Test Management and Project Management for delivery ✓ Delivered
Internal Process review as per Oaksys Audit needs ✓ Delivered
Support rendered to the Bank team for UAT Execution ✓ Delivered
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8. Tasks delivered differently
 This engagement was fully delivered at Offshore.
 The tasks were completed by frequent discussions, documentation and
structured review.
 Oaksys SME’s had deep knowledge of Domain & Product.
 Oaksys internal process delivery mechanism deeply helped.
 Oaksys team had past experience in Offshore delivery.
 Bank SME’s knowledge on localization crafted the Business requirements.
 Oaksys team were flexible to work with the Bank Business hours.
 Difference in time zone helped deliver in quick intervals.
 Cultural differences were overcome quickly to ensure timely delivery.
 Quality of deliverables adhered to the Bank SOW stipulations.
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9. Timelines and Project Gains
↑ Scope corrections due to customizations – Handled in execution runs,
saving time
↑ Test scope – Delivered above the agreed scope
↑ Test deliverables – Delivered beyond scope (Numbers & Quality).
→ Test Project Risks – Mitigated & controlled using back-up plans for each
Module.
→ Test Quality – Zero deviation on all parameters.
→ Test suite for Interfaces – Zero deviation, covered all 14 interfaces.
↓ Test Project value – No cost overrun – delivered more.
↓ Test Man-days – Extended work beyond agreed numbers to cover
customization.
↓ Test Resources – Extended team support for build with no additional cost to
Bank.
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10. Value Adds and Additional Support
$ Test cases prepared for the Parameter validation as well, although the scope
was limited to functional product testing.
$ Although this was a contract with agreed number of deliverables, additional
test cases prepared beyond the numbers were not charged to the Bank as a
good will.
$ Remote delivery will be a challenge unless the understanding and expertise to
convert the requirements exists. This was provided right through the project.
$ Test Process and internal Oaksys Quality checks ensured minimal slippage.
$ During the execution support timeline, Oaksys SME’s Prepared the Business
requirement document for future set of Modules – No additional cost.
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11. Thank you!
Oak Systems Pvt. Ltd.
#27, NGEF Lane, Off 100 Feet Road,
Indira Nagar, Bangalore – 560 038, INDIA
Tel : +91-80-4126 7681
Email: contact@oaksys.net
URL: www.oaksys.net
We add value through engagement
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