Map a representative end-to-end process before configuring the system’s business model. Use a test organization to check purchasing, stock and sales documents together, then assign roles that reflect who creates, approves and closes each transaction.
Document customizations and the rationale for workflow changes so future administrators can maintain the installation. iDempiere’s GPL source provides independence from a mandatory license subscription, but deployment, training and support require resources. Reconcile migrated balances and inventory before moving daily operations into the system.