Epicor Prophet 21 Upgrade & Data Migration

ESS routinely migrates distributors to Prophet 21 from A+, Baan/Infor, Macola, Excel, Microsoft Access and flat files. Every legacy ERP migration covers both master data — items, customers, suppliers — and transactional data such as open orders, inventory and financials, plus pricing pages, contracts and rebates, the records that are usually hardest to move by hand. Our proprietary, portal-driven tooling maps each domain to P21, stages it for your team's review, and loads it in idempotent batches, so even messy source data from spreadsheets and Access databases arrives clean. If your system isn't on that list, the same extract-stage-validate approach applies. ESS scopes any source system in a free assessment.

We eliminate the big-bang load. ESS's portal-driven tooling migrates data to Prophet 21 incrementally, starting weeks before go-live, and validates it in parallel against the live business — so by cutover weekend, most of the data is already in P21 and trusted. Batches are idempotent, meaning any load can be re-run safely with zero duplicate posts; a hiccup costs a retry, not a restore. That shrinks the actual downtime window to a short, controlled cutover, which matters enormously for a wholesale distributor that can't stop shipping. We engineered this approach specifically because data conversion is where most distribution ERP projects lose time, money and confidence.

Every data domain is staged and validated in a migration portal before anything posts to Prophet 21. Your team reviews records — items, customers, suppliers, financials, open orders, inventory — catches mapping issues, and signs off domain by domain, with status visible in real time. Validation runs in parallel with the live business, so numbers are checked against what's actually happening, not a months-old snapshot. This is the reconciliation step that rushed P21 data migration projects skip, and it's why our cutovers produce no surprises: by go-live, the people who know the data best have already approved it. Nothing loads into your new ERP unreviewed.

Yes — pricing is a first-class part of every ESS migration to Prophet 21. We import pricing from your pricing pages, books and libraries, including conditional pricing for contracts and rebates — the data that's usually hardest and riskiest to move by hand, and the first thing customers notice if it's wrong. Distribution pricing logic is exactly where generic ERP data migration tools fall down, because a distributor's margins live in layered price rules rather than a simple list. Migrated pricing goes through the same portal-based staging, validation and sign-off as every other domain, so your team confirms contract and rebate figures before the first P21 order is ever entered.

Yes. The same migration and integration tooling that loads data into Prophet 21 can keep your legacy system and P21 synchronized during a phased transition — orders, inventory and other operational data flowing between the two while you move location by location or function by function. That means the business keeps running throughout the ERP migration, with no hard stop and no forced big-bang date. Phased moves suit distributors with multiple branches, seasonal peaks, or integrations that can't all cut over at once. When the last piece moves, the sync simply retires. ESS designs the phasing plan around your calendar and risk tolerance in a free assessment.