Payroll Migration Validation FAQ

What is VeriDiff and how does it help with payroll migrations?

VeriDiff is a specialist payroll migration validation platform designed to prevent costly migration failures. We help implementation teams compare legacy payroll data against converted data before go-live, catching ETL errors that cost £500K+ in failed implementations. All processing happens locally in your browser for complete data security.

Which payroll systems does VeriDiff support?

VeriDiff works with all major payroll platforms including SAP SuccessFactors, Oracle HCM Cloud, ADP, Sage, CloudPay, and custom payroll systems. We support Excel and CSV data exports from any legacy or target system, making us platform-agnostic.

How is VeriDiff different from basic Excel comparison tools?

Unlike generic file comparison tools, VeriDiff is purpose-built for payroll migration validation. We understand payroll data structures, handle employee ID mapping, provide tolerance settings for salary calculations, generate executive go/no-go reports, and offer ETL validation specifically for HR and payroll implementations.

Do I need to install anything to use VeriDiff?

No installation required! VeriDiff runs entirely in your web browser. Simply navigate to our platform and start validating your payroll migration data immediately. All processing happens locally on your device for maximum security with sensitive payroll information.

Is there a free version for small migration validation tests?

Yes! You can test VeriDiff with sample legacy and converted payroll data (up to 1,000 records each) completely free. This lets implementation teams evaluate our platform during the planning phase. For full-scale migrations, we offer enterprise licensing.

At what stage of migration should we use VeriDiff?

VeriDiff is most effective during the pre-load validation phase - after your ETL processes have converted legacy data but before loading it into the new payroll system. This catches conversion errors early when they are still fixable, preventing expensive go-live failures and payroll disruptions.

What types of payroll data can VeriDiff validate?

VeriDiff validates all critical payroll data including employee master data, salary conversions, benefit calculations, deduction mappings, tax code transfers, pension contributions, bonus calculations, and any other legacy-to-new system transformation. We specialise in detecting calculation discrepancies and field mapping errors.

How does VeriDiff handle different data formats between legacy and new systems?

VeriDiff includes intelligent header mapping that automatically matches fields even when column names differ (e.g., "Join_Date" to "Start_Date"). We handle Excel-to-Excel, CSV-to-CSV, and cross-format comparisons, with tolerance settings for numerical differences in salary calculations.

Can VeriDiff detect calculation errors in payroll conversions?

Yes! VeriDiff includes sophisticated tolerance settings for payroll calculations. You can set acceptable variance thresholds for salaries, bonuses, and deductions. Our system flags when differences exceed these tolerances, helping you identify systematic calculation errors in your ETL processes.

What happens if VeriDiff finds significant data discrepancies?

VeriDiff generates executive summary reports with clear go/no-go recommendations. When significant discrepancies are found, we provide detailed analysis of root causes, immediate action plans for your ETL team, and recommendations for process improvements. This prevents costly post-go-live payroll corrections.

How do implementation consultants typically use VeriDiff?

Implementation teams use VeriDiff throughout the migration lifecycle: initial ETL testing, iterative conversion validation, pre-production verification, and final go-live approval. Our platform integrates into standard implementation methodologies and provides audit trails for project governance.

Can VeriDiff handle multiple conversion iterations?

Absolutely! VeriDiff tracks multiple validation runs, allowing implementation teams to test ETL improvements iteratively. Our migration context features help you track progress from initial conversion through final validation, maintaining a complete audit trail for stakeholders.

Does VeriDiff integrate with project management workflows?

VeriDiff generates reports suitable for project stakeholders, including executive summaries for steering committees and detailed technical reports for ETL teams. While we do not integrate directly with project tools, our outputs are designed for easy inclusion in project governance processes.

How does VeriDiff support parallel payroll runs?

VeriDiff is perfect for parallel payroll validation. Compare live legacy payroll results against converted data in your new system to verify calculation accuracy before switching over. This provides confidence for both implementation teams and business stakeholders.

What level of payroll expertise is needed to use VeriDiff?

VeriDiff is designed for both technical and business users. ETL developers get detailed field-level validation results, while project managers and business stakeholders receive executive summaries with clear go/no-go recommendations. No deep payroll system knowledge required to interpret results.

How secure is my payroll data with VeriDiff?

VeriDiff provides enterprise-grade security: all payroll data processing happens entirely within your browser - no data ever uploaded to external servers. For large-scale migrations, we offer private installations on your own infrastructure. Your sensitive payroll data never leaves your control.

Is VeriDiff compliant with data protection regulations?

Yes, VeriDiff client-side processing model supports compliance with GDPR (no personal data processing on external servers), HIPAA (suitable for healthcare payroll with proper controls), SOX (maintains audit trail integrity), and other data protection frameworks. Perfect for sensitive employee data.

Can VeriDiff team members access our payroll data?

No. VeriDiff processes all payroll data locally in your browser using JavaScript. Our servers never receive your employee data, salary information, or validation results. Even our support team cannot see what you are validating - this is our core security promise for sensitive payroll migrations.

How does VeriDiff handle employee personal information?

VeriDiff treats all employee data with the highest security standards. Since processing is local, employee names, salaries, and personal information never leave your device. For enterprise installations, we can work within your existing data governance frameworks.

Are there audit logs for compliance purposes?

VeriDiff generates comprehensive validation reports that serve as audit trails for migration projects. These include validation timestamps, data quality metrics, and approval workflows suitable for compliance documentation and project governance requirements.

How does enterprise pricing work for large payroll migrations?

Enterprise pricing is based on project scope and employee count. We offer project-based licensing for one-time migrations and subscription models for ongoing payroll operations teams. Contact us at sales@veridiff.com for custom enterprise pricing based on your specific migration requirements.

Do you offer dedicated support for critical go-live dates?

Yes! Enterprise customers get priority support during critical migration phases. Our team understands the pressure of payroll go-live deadlines and provides dedicated assistance to ensure your validation processes run smoothly when it matters most.

Can VeriDiff handle very large payroll datasets?

VeriDiff efficiently handles large employee populations since processing happens on your device. For massive datasets (50,000+ employees), we recommend enterprise installations with optimized infrastructure. Contact us to discuss your specific scale requirements.

Is training available for implementation teams?

Enterprise customers receive comprehensive training covering payroll validation best practices, advanced tolerance configurations, report interpretation, and troubleshooting. We also provide ongoing consultation during critical migration phases.

Do you offer on-premise installations for security-sensitive organisations?

Yes, we provide private VeriDiff installations within your own infrastructure for organisations with strict data sovereignty requirements. This ensures complete control over sensitive payroll data while providing full platform capabilities.

How does VeriDiff handle complex payroll calculations?

VeriDiff includes sophisticated tolerance settings for payroll-specific calculations. You can configure different tolerance levels for salaries, bonuses, tax calculations, and deductions. Our system understands that small rounding differences in payroll calculations are often acceptable.

Can VeriDiff validate payroll data with different structures?

Yes! VeriDiff excels at validating data with different structures between legacy and new systems. Our intelligent mapping handles field name changes, data type conversions, and structural differences common in payroll system migrations.

What file formats does VeriDiff support for payroll data?

VeriDiff supports Excel (.xlsx, .xls) and CSV (.csv) formats - the most common export formats from payroll systems. We handle multiple worksheets, cross-format comparisons (Excel vs CSV), and can process data exports from any payroll platform.

How accurate is VeriDiff for detecting payroll migration errors?

VeriDiff achieves 99.8% accuracy in payroll validation scenarios. Our algorithms are specifically tuned for payroll data patterns, employee ID matching, and calculation validation. We are designed to catch the subtle errors that cause major payroll disruptions.

Can VeriDiff integrate with our existing ETL processes?

While VeriDiff does not integrate directly with ETL tools, it fits seamlessly into ETL validation workflows. Generate validation reports after each ETL run to verify data quality before proceeding to the next migration phase. Perfect for iterative ETL improvement processes.

What support is available during critical migration phases?

Enterprise customers get priority email support with faster response times during critical migration phases. We understand payroll go-live deadlines and provide dedicated assistance when your project timeline is at risk. Free users receive community support through documentation.

Do you provide consultation on payroll migration best practices?

Yes! Our team has 25+ years of payroll migration experience across all major platforms. Enterprise customers receive consultation on validation strategies, tolerance setting best practices, and migration risk mitigation based on your specific payroll system combination.

How do I get help with specific validation scenarios?

Enterprise customers get priority consultation on complex validation scenarios including multi-system migrations, legacy data cleanup requirements, and custom calculation validation. Contact support@veridiff.com with details about your specific migration challenges.

Is there a migration validation methodology you recommend?

Yes, we recommend a phased validation approach: 1) Initial ETL testing with sample data, 2) Full dataset validation in non-production, 3) Parallel payroll run validation, 4) Final pre-go-live verification. We provide detailed methodology guidance to enterprise customers.

What happens if we discover issues close to go-live?

VeriDiff is designed for rapid validation cycles. Our fast browser-based processing allows quick re-validation after ETL fixes. Enterprise customers get priority support during crunch time to help resolve issues and get your migration back on track.