Scope Your WMOS Migration Before You Price It
Legacy warehouse management system (WMS) migrations are often priced before anyone has looked at the extensions, the interfaces, or the data the floor actually depends on. The Everest migration assessment is a fixed-scope engagement that inventories your WMOS, SCALE, or other legacy warehouse management environment and hands you a named set of deliverables you own, whether or not Everest performs the migration.
- System Inventory
- Data Migration Blueprint
- Extension Disposition
- Integration Impact Map
Why Legacy WMS Migrations Get Scoped Wrong
Legacy WMS migrations get scoped wrong because the environment is estimated from memory rather than counted object by object, so custom code, data mapping, and integration work are all discovered after the budget is fixed:
Custom code accumulated across many releases is counted as a single line item rather than inventoried object by object, so the rebuild is sized from memory.
The source data model is assumed to map cleanly onto Manhattan Active®, and the reconciliation work surfaces only after conversion runs begin.
Interfaces to ERP, host, parcel, and material handling are listed by name but never traced to the message contracts and volumes behind them.
Nobody writes down who owns which task, so the client, the software vendor, and the systems integrator each assume another party is handling it.
The assessment exists to replace all four assumptions with a counted environment.
What Changes When You Move From WMOS to Manhattan Active®
A move onto Manhattan Active® Warehouse Management changes the extension model, the data model, and the integration surface. The operating reality of the site does not change, which is why the assessment reads volumes from the live system.
Six Named Deliverables You Own at the End of the Assessment
The Everest legacy migration assessment produces six named deliverables: a system inventory, a data migration blueprint, an extension disposition register, an integration impact map, a cutover and rehearsal plan, and a task-by-task responsibility split.
System Inventory
Everest inventories every version, module, interface, report, label format, and integration running in your current WMOS, SCALE, or other legacy warehouse management environment, so the migration is scoped against what is actually in production.
Data Migration Blueprint
We map source entities such as items, locations, inventory balances, license plates, open orders, and transactional history onto the Manhattan Active® Warehouse Management data model, and name every field that needs transformation, enrichment, or a business decision.
Extension Disposition
We classify each customization as retire, replace with native Manhattan Active functionality, or rebuild on the supported extension framework, and we attach an effort band to each one.
Integration Impact Map
We trace every interface to its message contract, direction, trigger, and volume, so you can see which integrations survive as they are, which need remediation, and which disappear entirely.
Cutover and Rehearsal Plan
We design the cutover sequence around your shift patterns, seasonal volume peaks, and site count, including rehearsal cycles, reconciliation checkpoints, and a defined rollback point for each phase.
Responsibility Split
We publish a task-by-task responsibility split across your team, Manhattan Associates, and Everest, so no work sits unclaimed in the gap between three parties.
What the Assessment Examines in Each Source Platform
Manhattan WMOS and Manhattan SCALE fail differently in migration, so the Everest assessment asks different questions of each environment: WMOS for script-level customization, SCALE for its separate data model and add-on capabilities, and any other legacy platform for operating logic held outside code.
Scope Your Migration- WMOS: heavily customized MOCA and Page Builder logic, script-level overrides, and accumulated radio frequency (RF) screen changes that have to be separated from core behavior before anything can be re-expressed in Manhattan Active®
- SCALE: a different data model and extension approach from WMOS, plus database sizing, reporting layers, and slotting or labor add-ons whose Manhattan Active equivalents have to be confirmed capability by capability
- Any other legacy platform: operating logic that often sits in rules and parameter tables rather than in code, so the assessment reconstructs how the site actually runs from the configuration itself before restating it as Manhattan Active process design
- Every environment: interfaces to ERP, host systems, parcel carriers, and material handling equipment, each traced to the message contract, direction, trigger, and volume behind it
- Any source: open orders, work already released to the floor, and inventory history, which shape the cutover far more than the badge on the platform does
How Everest delivers your legacy migration assessment
Everest runs the migration assessment inside your live system rather than from a questionnaire. We pull the object inventory straight from the source platform, so the extension count is counted rather than recalled, and we read interface logs to confirm which integrations are genuinely in use instead of trusting a list that was accurate several releases ago.
We then work with the supervisors who run the floor on every shift, because the behavior that matters most to a cutover is rarely the behavior described in the documentation. Their input, set against the object inventory and the interface evidence, is what turns the six deliverables into a plan your operations leaders can sign rather than a document they receive.
What a migration assessment changes for the business
- A migration budget built from a counted environment instead of a vendor estimate
- Extension rebuild effort known before the contract is signed
- Integration risk documented at scoping stage rather than discovered during build
- A cutover sequence your operations leaders have already agreed to
- A documented responsibility split across client, Manhattan Associates, and systems integrator
An Assessment Priced by Evidence, Not Guesswork
Everest has delivered 150+ Manhattan Active® go-lives, including 65 go-lives across 2024 to 2025, and 300+ warehouse management system (WMS) go-lives since 1997, and every Everest migration assessment is scoped against that delivery record.
- 150+Manhattan Active® go-lives informing every migration scope
- 65Manhattan Active go-lives delivered across 2024 to 2025
- 300+Warehouse management system go-lives since 1997
Frequently Asked Questions
The assessment produces six named deliverables for a move onto Manhattan Active® Warehouse Management: a system inventory, a data migration blueprint, an extension disposition register, an integration impact map, a cutover and rehearsal plan, and a task-by-task responsibility split. The assessment is a fixed-scope engagement, and you keep every deliverable whether or not Everest performs the migration itself.
Everest assesses Manhattan WMOS and Manhattan SCALE environments, plus other legacy warehouse management systems, for migration onto Manhattan Active Warehouse Management. Each source is handled separately, because WMOS carries MOCA, the command layer inside Manhattan WMOS, along with script-level customization, while SCALE uses a different data model and a different extension approach.
Yes. Manhattan SCALE and Manhattan WMOS have different data models, different extension approaches, and different reporting layers, so the mapping work and the rebuild effort are not comparable between them. The Everest assessment treats each as a separate exercise, and the data migration blueprint is written against whichever source model you actually run.
Migration cost is driven by site count, the volume of custom code, the number of live integrations, and how much transactional history has to move. Everest publishes no list price because those four variables move cost by an order of magnitude between environments, and the assessment counts all four against your actual environment.
No. The assessment is a standalone, fixed-scope engagement, and the deliverables are yours to use with any partner or with your internal team. Everest sells no software of its own, so the recommendation carries no license interest, and nothing in the deliverables is written to be readable only by Everest.
Every customization is classified as retire, replace with native Manhattan Active functionality, or rebuild on the supported extension framework, with an effort band attached to each one. Everest has delivered 150+ Manhattan Active® go-lives, and one documented program produced 33 Manhattan custom modules and 47 integrations, which is what makes those effort bands grounded rather than notional.
Everest does not publish a duration figure, because migration scope depends on site count, the volume of custom logic, integration complexity, and how much transactional history must be converted. Sizing those four variables is precisely what the assessment does, so you get a scoped plan grounded in your own environment.
The assessment publishes a task-by-task responsibility split across your team, Manhattan Associates, and Everest as systems integrator, covering data extraction, environment provisioning, configuration, extension build, testing, and cutover execution. Work that falls between three parties is a common source of unclaimed scope, so the assessment names every task owner in writing.
Ready to Scope Your Move Off Legacy WMS?
Everest scopes legacy WMS migration assessments for Manhattan WMOS, Manhattan SCALE, and other legacy warehouse management environments moving onto Manhattan Active® Warehouse Management.
Scope Your Migration