The core stays the system of record. The upgrade is when the boundaries get drawn.
FLEXCUBE, OBPM, OBB and OBCL upgraded as one estate — with explicit interfaces, a rehearsed cutover and the same team on support afterwards.
Customers, accounts, contracts, positions and the GL stay in the core. Retained customizations are rebuilt as non-invasive extensions so future patches don't break them.
Select a component to see what changes.
Is it time to plan the upgrade?
Tick what applies to your estate.
Indicative only. The fixed-scope discovery replaces this with a register-based estimate.
Five stages, evidence at every gate
Select a stage to see what is produced and what the bank signs off.
Current-estate assessment, FLEXCUBE configuration review and reverse engineering of the customization layer: inventory every object, trace its dependencies and EOD impact, then classify it — standardize, reconfigure, re-home to a component, rebuild as an upgrade-safe extension, or retire.
Customization register with a disposition per object
Signed off by: Steering committeeThe migration factory
The same six-step path runs every cycle, with the same scripts, mappings and reconciliation reports in mock cycles and in production — until the numbers stop moving.
- Step 1: ExtractT0 source freeze and agreed scope
- Step 2: TransformODI cleanse and map to the 14.x model
- Step 3: StageGateway tables, load-ready
- Step 4: ValidateCVDUPLOD / function IDs, standard rules
- Step 5: ReconcileCounts, GL control accounts, trial balance
- Step 6: Sign-offEvidence pack, bank approval
- Volume
- Upload statistics by entity
- Quality
- Errors, fixes and reprocessing
- Completeness
- Counts and sampling
- Accounting
- Trial balance and GL control accounts
- Operations
- Full EOD / EOM on migrated data and user sign-off
A completed load is not an accepted cycle.
No cycle is accepted without its evidence pack.
Free guide · DOCX · fillable Word file
FLEXCUBE Upgrade Assessment Questionnaire
30 questions with ready answer options that score your bank's readiness for a FLEXCUBE upgrade — a fillable Word file to complete with your team before the assessment workshop.
Frequently asked questions
From the blog
Written by the people doing the work
More FLEXCUBE services
Start with the customization register.
Fixed-scope discovery: the register, the target version and the migration scope decision.