ERP Mock Data Load Rehearsal Planner: How Many Mock Loads Do You Need?

How to use it

Count records for every object in scope, including open transactions such as open sales orders, purchase orders, work orders and balances. Measure throughput from a real trial, not the vendor's quoted rate. Enter the validation and fix time between cycles, the reject rate on the first mock and how much of that rate you usually eliminate by the next one. Vary the number of mock loads to see rejects and elapsed time trade off.

• Measure throughput at production volume
• Include open transactions, not just masters
• Add validation and reconciliation time
• Plan at least one full-volume dress rehearsal

Reading the result

The chart shows diminishing returns: the first extra mock removes the most errors, later ones remove fewer in absolute terms. Pick the number of mocks where the expected rejects are small enough for the cutover team to fix by hand in the window. Add a mock if the final rejects still need more than a few hours of manual correction, or if reconciliation to the source ledger still shows differences.