Step 1
Legacy and new outputs
Mainframe batch files and new service outputs
← Solutions Lab · Accelerator
Accelerator
QAO ParityCheck
Proof that a new cloud system gives exactly the same results as the mainframe it replaces, field by field.
INDUSTRY BFSISOLUTION FAMILY Cloud and Platform Modernization
The problem it solves
When programs move off the mainframe, teams must prove nothing changed. Today that means spreadsheets and spot checks, and differences surface late, when they are expensive to fix.
How it works
Four steps. A person decides.
Step 2
Field mapping
Old file layouts read and matched automatically
Step 3
Compare engine
Every record compared with tolerance rules
Step 4
Sign-off report
Differences explained and cutover evidence produced
What's inside
Built for the real work.
Reads legacy layouts
Old record layouts parsed without manual mapping.
Tolerance rules
Rounding, dates and ordering handled without false alarms.
Explained differences
Each mismatch classified as cosmetic or a real logic break.
Cutover evidence
A sign-off report auditors and business owners can read.
Built with
Layout parserCompare engineAI diff explainerPythonDashboardsCLI and API
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