Define module boundaries
Begin with the records that cross teams: suppliers, items, purchase orders, receipts and invoices. Establish one owner for each source record and identify where staff currently re-enter the same information. An ERP project can start by integrating an existing system rather than replacing everything. Preserve statutory and accounting responsibilities with the people qualified to approve them.
Purchasing and inventory workflow
Map requested, approved, ordered, received and returned quantities separately. Partial receipts and damaged stock must not silently become available inventory. Define units, locations and valuation inputs before designing screens. An approval should record who approved which version; changes after approval need a deliberate reapproval rule. Include exception queues so missing information is visible.
Migration and reconciliation
Trial-import reference data before transaction history. Retain source identifiers and compare balances, quantities and document totals with the existing system. Schedule a controlled cutover and agree how outstanding transactions are handled. Integrations need idempotency and an audit trail for retries. Reconciliation reports are as important as the import function itself.
Acceptance and ownership
Test partial deliveries, cancellation after approval, duplicate supplier invoices and users with restricted roles. Confirm backup restoration and export formats before release. The handover should identify who maintains tax settings, accounting mappings and vendor connections. Bring sample purchase documents, role definitions and reporting requirements to a workshop; a scoped module plan is more useful than an unbounded request for a complete ERP.