Supply Chain Network
Watch: Setting Up Your Supply Chain Mapping
New to the Supply Chain canvas? This walkthrough shows the setup end to end — placing your suppliers, warehouses, and channels, connecting them, and grouping warehouses into regions.
What Is the Supply Chain Network?
The Supply Chain page is a visual map of where supply is made or bought, and what can move where — from supplier, to warehouse, to the channels that sell it. It lives alongside Stock Overview and Warehouses under Operations > Inventory, and all three share the same tab bar so you can move between them.
Below the canvas, four cards break the same information into tables: Lanes, Sources, Stock policies, and Regions. Once your network is mapped, Moselle uses it to route demand and supply correctly: which warehouse a channel's sales should pull from, how long stock takes to move between locations, and — with Regions — how demand should split across a group of warehouses instead of landing on just one.
What You Can Add to the Canvas
Supplier
Where product is made or sourced from — a finished goods vendor, or a manufacturer that makes it for you
Warehouse
A location holding stock (matches your warehouses in Operations > Inventory)
Channel
A place you sell (matches your sales channels)
Region
A named group of warehouses whose demand is forecast together
Lane
A connection carrying stock between two locations, with a transfer time
Source
A connection showing where a location's supply comes from — production, purchase, or transfer — and on what terms (lead time, order minimums and maximums)
Stock policy
Minimum/maximum inventory targets set on a warehouse
Drag any of these from the tray onto the canvas, then draw connections between them left to right — supplier → warehouse → region (if grouped) → channel — to match how product actually flows through your business.
The tray on the left — Your places — lists the warehouses, suppliers, and channels you already have in Moselle. Drag them out; you don't recreate anything here. The Suppliers heading also has a +, which opens the same Add supplier dialog as the Suppliers page, so a vendor you'd forgotten can be created without leaving the map.
Suppliers, Manufacturers, and Co-Packers
Select a supplier's card and Moselle walks you through the same guided questions as the Add supplier dialog — whether they manufacture your product, who sources the components, and whether you track stock at their facility. The answers decide how that supplier's connections behave:
Finished goods supplier — a straight purchase, with one transfer lead time.
Turnkey manufacturer — they make your product and source their own inputs. Connections carry a production lead time and a transfer lead time, and planning uses the two added together.
Consignment manufacturer — they make your product from components you send, so Moselle tracks inventory at their facility.
A manufacturer can hold your stock: turn on inventory tracking and either create a new warehouse named after the supplier or link one you already have — either way, the card reads Inventory tracked at [warehouse]. Component vendors can then be connected into that manufacturer, which is how a "we send them the parts" arrangement gets drawn.
Supplier TypesReading the Connections
Each kind of connection has its own colour and label, so a glance tells you how stock reaches a location:
Purchase
Bought from a supplier, with one lead time
Production
Made for you — production lead time plus transfer time, shown summed on the line
Transfer
Moved between two of your own locations over a lane
Sells from (channel)
The location (or region) a channel's demand is served from
Region share
Dotted and grey: not a movement, but which warehouses answer a region's demand and in what share
Work-in-Progress Lanes and the Red Chip
A red chip is a "not saved yet" flag, not an error. It exists so you can rough out a map — dragging nodes and drawing lines to plan how things should connect — before you're ready to fill in lead times, order terms, or other details on every connection.
It's local to you. While you're mid-edit, a teammate looking at the same canvas doesn't see your red, work-in-progress connections — only the version that's actually saved. That keeps one person's unfinished changes from showing up as "the network" for everyone else.
Clearing it is the only way it saves. Click into a red connection, fill in the details the connection type needs, and confirm. Once confirmed, the chip disappears and the connection saves like any other.
Until it's confirmed, it doesn't count. A red connection isn't reflected in your Lanes, Sources, or Stock policies tables, in forecasting or production planning, or in what Mo can see — it exists only on your screen.
This is different from the Network problems panel further down the page: that panel flags gaps in your saved network. A red chip means a connection was never saved in the first place.
If you leave red connections unresolved and then use Align with Database (below), they're erased, not kept. Finish or intentionally discard any work-in-progress lanes first if you want to hold onto them.
Align Your Map with the Database
More than one person can work on the same map over time, and the canvas can drift from what's actually saved — someone starts rearranging or adding connections, doesn't finish, and moves on. The next person to open the Supply Chain page sees that unfinished layout mixed in with the real network, which can look messy or out of date.
Align with database resets the canvas to match your saved network exactly, using the same Lanes, Sources, Stock policies, and Regions your tables already show — the quickest way back to a clean, accurate map.
Align with database erases anything still showing a red chip. A red connection was never saved, so aligning treats it the same as any other unsaved change — it's discarded, not merged in. Before you align, check the canvas for red chips and finish (or accept losing) anything you still want.
To use it, click Align with database on the Supply Chain canvas.
Group Warehouses into Regions
A Region groups several warehouses so you can forecast demand against them collectively — for example, an "NA Region" made up of an East Coast and a West Coast warehouse, split 60/40 between them. Instead of every channel's demand pointing at a single location, it fans out across the region's members according to the percentage you set.
A region only plans demand if its warehouses have a percentage split. A region with no split set shows a "No splits set — demand not planned" warning — its demand isn't being routed anywhere. New regions must have their split total 100% before you can save them.
Create a Region
Name the region and add warehouses
Give the region a name (e.g. "NA region"), then use Add warehouse to build the list of warehouses that belong to it. Next to each warehouse, enter its percentage share of the region's demand — a running total shows you how close you are to 100%.
Percentages must be set on every warehouse in the region, or left blank on all of them — you can't mix set and unset shares.
A warehouse can only belong to one region at a time; it drops out of the list once it's assigned.
Save
Click Create region. The dialog shows which channels are already forecasting into the region — channels themselves are connected to a region from the canvas, not from this dialog (see next step). The region appears on the canvas as a small pill showing its name and split (e.g. "North America region · 60 / 40") wherever its member warehouses feed into it.
Editing a Region
Change the percentage split from the region's pill on the canvas — click the pencil icon to open the split editor. It still requires every member to total 100% before saving.
Add or remove member warehouses from the Regions table (next to Lanes, Sources, and Stock policies on the same page), using Edit region.
A region and its member warehouses are always connected on the canvas — that connection is the region, so it can't be deleted by removing the line. To remove a region entirely, archive it.
Fix Network Problems
When something in your network can't work, a Network problems panel appears above the canvas listing each finding by name. They're worth clearing: a location nothing can reach, or a channel with nowhere to sell from, is a gap in planning rather than a cosmetic issue.
Channels without location
A channel's demand has nowhere to be served from
Connect the channel to a warehouse or region on the canvas
Channels fulfilled by unreachable location
The channel points at a location that nothing can stock
Give that location a way in — a supplier, production, or an active transfer lane
Channels fulfilled by archived location
An active channel is still pointed at a retired warehouse
Repoint the channel at a live location
Locations with no way in
Stock is expected here, but nothing produces, buys, or transfers into it
Add a source or an inbound lane
Lanes touching archived locations
A lane still runs to or from a warehouse you've archived
Delete the lane, or unarchive the warehouse if it's still in use
How This Fits Into Your Planning Cycle
Mapping your supply chain isn't just documentation — Moselle uses it during forecasting and production planning:
Forecasting: When a channel is connected to a warehouse (or to a Region), that channel's forecasted demand is assigned there. For a region, demand is split across member warehouses using the percentages you set — this is what makes the split real, rather than a label.
Production Planning: Lanes and Sources tell Moselle how stock actually reaches a warehouse — production and purchase lead times, and transfer times between locations. If more than one warehouse could supply the same destination, Moselle plans from a single warehouse rather than duplicating the recommendation: it follows an explicit priority you've set on a transfer source first, falling back to the shortest transfer time when you haven't set one.
Mo: Mo reads your mapped network, so questions about where stock comes from and how long it takes are answered against your own routes rather than general rules — and you never have to explain your setup first. It knows which locations supply which, the production and transit time on every route, order minimums and multiples, which channels ship from where, and the same gaps the Network problems panel lists. Ask in plain language:
"What feeds our East Coast warehouse, and how long does each route take?"
"Is transferring
SKU-001from the West Coast faster than a new order fromAcme Supply Co?""Are there any problems with how my supply network is mapped?"
The more of the map you fill in, the sharper those answers get — a route with no lead time recorded can't produce an arrival date. Mo reads the network but never edits it, so changes still happen on the canvas.
Step-by-Step: Build Your Network
Group warehouses into a Region (optional)
If multiple warehouses serve the same demand together, group them into a Region and set the percentage split. See Group Warehouses into Regions above.
Frequently Asked Questions
What happens if I don't set a percentage split on a region?
Answer: The region is flagged with a "No splits set — demand not planned" warning, and its member warehouses receive none of the channel demand assigned to the region. Set a split totaling 100% to activate planning for that region.
Does a region need its own warehouse or location?
Answer: No. A region is a forecasting grouping, not a physical location — it doesn't need a backing warehouse of its own. It's made up entirely of the warehouses you add as members.
Can a warehouse belong to more than one region?
Answer: No, a warehouse can only be a member of one region at a time. It drops out of the selection list for other regions once assigned.
Why is my region flagged as unreachable?
Answer: It shouldn't be, as long as one of its member warehouses can be stocked — supply lands on the members, not on the region itself. If the warning persists, check whether every member is missing a source or inbound lane.
Can I create a supplier from the canvas?
Answer: Yes. Click the + on the Suppliers heading in the tray. It opens the same Add supplier dialog as the Suppliers page, and the new supplier appears in the tray ready to drag out.
Can I delete a region's connection to its member warehouses?
Answer: No. That connection represents the region's membership, not a route you drew — it updates automatically as you add or remove members in the Regions table. To remove a region altogether, archive it.
What does the red chip on a lane mean?
Answer: It means that connection is a work in progress — you've started it, but its details haven't been filled in and confirmed, so it hasn't saved to the database yet. It's local to you; open the connection, complete its details, and confirm to save it and clear the chip.
What happens to red connections if I click Align with Database?
Answer: They're erased. Align with database resets your canvas to match what's actually saved, and a red connection was never saved — so it's discarded rather than kept. Finish or accept losing any red connections before you align.
Why does my supply chain map look different from a coworker's?
Answer: Red, work-in-progress connections are local to whoever placed them — nobody else sees a chip until it's confirmed and saved. If two people are looking at the same map and one sees connections the other doesn't, check for red chips first: whoever placed them should finish and confirm the details, or you can click Align with database to reset the view to what's actually saved. Everything saved is shared identically across all users; only unconfirmed, red connections can differ from person to person.
Troubleshooting Common Issues
A region shows a warning on the canvas
Open the region and check whether its percentage split totals 100%. Add or adjust shares until it does.
A warehouse isn't available when creating a region
It's likely already a member of another region. Remove it from that region first, or choose a different warehouse.
A channel's demand isn't reaching the warehouses I expect
Confirm the channel is assigned to the correct region (or directly to a warehouse) in the Regions or connection card.
I can't find the Supply Chain tab
It's under Operations > Inventory, alongside Stock Overview and Warehouses.
A Network problems panel is showing findings I don't understand
Each finding names the entity involved — see Fix Network Problems for what each one means.
A supplier won't accept a component vendor connection
Set the supplier to a manufacturing type and turn on inventory tracking at its facility first.
A supplier I need isn't in the tray
Click the + on the Suppliers heading to create it without leaving the page.
A connection is showing a red chip
It's a work in progress and hasn't saved yet. Click into it, fill in the required details, and confirm to save it and clear the chip.
My map looks cluttered, outdated, or has connections I don't recognize
Click Align with database to reset the canvas to your actual saved network. This erases any unresolved red connections, so finish or accept losing them first.
My map looks different from a coworker's
Check for red chips — they're local to whoever placed them, so unconfirmed work won't show up on someone else's screen. Finish and confirm them, or click Align with database to see only what's actually saved.
Related Guides
Create a WarehouseStock OverviewSupplier TypesAsk Mo About Your Supply ChainLast updated