ERP data migration checklist for SMEs

Quick answer

ERP data migration checklist for SMEs helps UK SMEs understand what Digital Adaption does, where it fits, and how the process works from first conversation to practical data management, migration, automation or reporting work.

Use this checklist before ERP, CRM, finance-system or reporting migration work. It is designed for finance, operations and leadership teams that need practical cutover confidence, not a theoretical project template.

The biggest migration risks usually sit in source data: duplicate customers, old supplier records, inconsistent product categories, manual spreadsheet adjustments, missing finance dimensions and reports that only reconcile because somebody edits them at month-end.

1. Scope and ownership

List every source system, export, database and unofficial spreadsheet that feeds the migration.
Name owners for customers, suppliers, products, finance codes, stock, orders and open transactions.
Confirm what moves, what is archived, what is excluded and what needs manual sign-off.
Agree who resolves exceptions when source data conflicts with the target-system rules.

2. Data quality checks

Find duplicates, blanks, invalid values, inactive records and inconsistent naming conventions.
Check finance dimensions, product categories, customer status values and supplier payment terms.
Identify fields that are mandatory in the target system but optional or missing in the source.
Rank defects by cutover risk rather than trying to clean everything at once.

3. Mapping and validation

Build source-to-target maps for critical fields and reference tables.
Document transformation rules, defaults, exclusions and validation logic.
Create record-count, control-total, balance and status checks before test loads begin.
Use the source-to-target mapping template to capture owner decisions.

4. Reconciliation and sign-off

Reconcile balances, open invoices, orders, stock, customers, suppliers and reports after each test load.
Compare trusted management reports before and after migration.
Agree go/no-go criteria before cutover weekend.
Keep an issue log with owner, severity, decision, fix and retest status.

Need help with this checklist?
Digital Adaption helps UK SMEs prepare migration readiness packs, data-quality backlogs and reconciliation checks. Book a migration review.