ERP data migration is a controlled business-data transformation, not a final weekend export and import. Success requires ownership, scope, cleansing, mapping, repeated rehearsal, reconciliation, and auditable sign-off.
Decide What to Migrate
Classify master data, open transactions, balances, history, reference data, attachments, and audit records. Migrate only what supports operations, reporting, compliance, or justified analysis; archive the rest in a controlled, accessible form.
Define source of record, data owner, target object, cut-off rule, history period, and acceptance threshold for every domain.
Profile Source Data Early
Measure completeness, validity, uniqueness, consistency, referential integrity, and timeliness. Find duplicates, inactive records, free-text codes, missing tax identifiers, invalid addresses, and conflicting units before mapping.
Data owners—not the technical migration team alone—must decide the correct business value.
Design Mapping and Transformation
Specify source fields, target fields, types, code conversion, defaults, derivation, validation, ownership, and rejected-record handling. Version the mapping and require approval for changes.
Preserve lineage from target record to source and transformation. Avoid unexplained spreadsheet edits that cannot be reproduced.
Build a Repeatable Pipeline
Automate extract, stage, transform, validate, load, reconcile, and report. Protect personal and financial data in non-production; use masking and access control rather than uncontrolled copies.
Make reruns safe. A failed load should not duplicate suppliers, opening balances, or orders.
Rehearse Multiple Times
Run migrations against representative volumes and the intended environment. Each rehearsal should test duration, cut-over dependencies, error handling, reconciliation, business validation, rollback, and team communication.
Track defect trends. A rehearsal that “completed” with unexplained differences is not successful.
Reconcile at Business Level
Compare record counts plus totals that matter: trial balance, receivables, payables, inventory quantity/value, open orders, tax, and subledger-to-ledger control totals. Sample critical records end-to-end.
Document tolerances, exceptions, owner decisions, and sign-off. Do not hide differences inside aggregate totals.
Control Cut-Over
Define freeze windows, final extracts, delta handling, responsibilities, checkpoints, go/no-go authority, rollback, and communications. After go-live, monitor interfaces, balances, rejected transactions, and user-reported data issues through a dedicated command structure.
DualByte's ERP solutions service can design and execute a traceable migration with business reconciliation at every rehearsal.
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