ERP implementation mistakes become expensive when the project is already moving

ERP projects usually do not fail because the company did not choose the perfect system. More often, the business never agreed how it should operate after launch.

1. Skipping process description

If vendors receive only a wish list, proposals become difficult to compare and important decisions move into the most expensive project phase.

2. Cleaning data too late

Items, customers, suppliers, prices, units, and stock should be cleaned before migration, not during launch week.

3. Testing demos instead of work

Test real scenarios: returns, corrections, partial deliveries, defects, price exceptions, and non-standard customers.

4. Involving users too late

If employees first see the solution during training, they often find gaps when changes are already more expensive.