Simulation Charts

Tether provides visual charts to help you understand simulation results, identify inventory issues, and make informed decisions. The charts display the day-by-day output of the simulation engine, showing how inventory levels change over time as consumption and supply events occur.

Inventory Forecast Chart

The primary visualization is the inventory forecast chart, which shows projected inventory levels over the simulation horizon for a specific SKU-warehouse pairing.

Daily Inventory Values

The simulation tracks inventory on a day-by-day basis. The chart displays two key values for each day:

Value	Description
BOH (Beginning on Hand)	The inventory quantity at the start of the day, before any events are processed
EOH (End on Hand)	The inventory quantity at the end of the day, after all consumption and supply events are applied

The relationship between BOH and EOH for each day follows this flow:

BOH → subtract consumption → add supply events → EOH

The next day’s BOH equals the previous day’s EOH, creating a continuous projection:

Day 1 EOH = Day 2 BOH
Day 2 EOH = Day 3 BOH
...and so on

The difference between BOH and EOH on any given day tells you the net inventory change. A large drop indicates high consumption or no incoming supply. A large increase indicates a replenishment order landing.

Consumption Events

Consumption events reduce inventory throughout the simulation. These are shown on the chart as downward movements:

Event Type	Description	Chart Effect
Sales Forecast	Projected daily sales based on the demand forecast model	Gradual, steady decline in inventory
Actual Sales	Recorded sales for historical days	Reflected in past-period inventory levels
Transfer Out	Inventory leaving the warehouse to supply another location	Sudden drop on transfer date
Production Consumption	Raw materials or components consumed during manufacturing	Reduction in component SKU inventory

Supply Events

Supply events increase inventory. These are shown on the chart as upward movements:

Event Type	Description	Chart Effect
Purchase Order Landing	Inventory received from a supplier	Sudden rise on the landing date (order date + supplier lead time)
Transfer In	Inventory arriving from another warehouse	Sudden rise on arrival date (transfer date + transit lead time)
Production Complete	Finished goods added after manufacturing	Sudden rise on completion date (start date + production lead time)
In-Progress Orders	Existing orders (drafts or submitted) expected to arrive	Pre-scheduled supply shown on expected landing dates

The simulation distinguishes between two projection lines. The current projection (User Forecast Route) includes only existing orders and drafts from your supply plan. The recommended projection (System Forecast Route) includes system-generated replenishment orders based on your configuration rules.

Two Projection Lines

The chart displays two inventory projection lines:

Line	Color	Description
Current Projection	Blue solid line	What happens with your existing supply plan (current orders and drafts only)
Recommended Projection	Green dashed line	What happens if you accept the system’s replenishment recommendations

Current Projection (User Forecast Route):

Uses existing supply plan drafts, submitted orders, and in-progress transactions
Does not generate new replenishment orders
Shows the impact of your current plan as-is

Recommended Projection (System Forecast Route):

Ignores the user supply plan
Generates new replenishment orders based on configured rules (cadence, safety stock, lead times, MOQ)
Shows what the system recommends for optimal inventory levels

The gap between these two lines highlights where your current plan differs from the system’s recommendations.

Threshold Lines

The chart displays horizontal threshold lines that represent inventory targets and limits:

Threshold	Visual	Description
Safety Stock	Red dashed line	The minimum acceptable inventory level. When the projection crosses below this line, it indicates a safety stock breach.
Target Stock	Yellow dashed line	The ideal inventory level that replenishment orders aim to restore inventory to.
Overstock Threshold	Orange dashed line	The maximum desired inventory level. Inventory above this line is flagged as excess.

Reading Threshold Zones

The areas between threshold lines represent different inventory health states:

Above Overstock ──── Excess inventory (ties up capital)
─── Overstock Threshold ───
Healthy Zone ─────── Inventory between target and overstock
─── Target Stock ──────────
Adequate Zone ────── Inventory between safety stock and target
─── Safety Stock ──────────
Below Safety Stock ─ Risk of stockout (action needed)
─── Zero ──────────────────
Stockout ─────────── No inventory available

Alert Levels

When inventory crosses threshold lines, the simulation assigns alert levels to replenishment recommendations:

Alert Level	Condition	Recommended Action
Urgent	Inventory is at or below safety stock; stockout is imminent	Order immediately
Important	Inventory is approaching safety stock levels	Order this week
None	Inventory is healthy; standard replenishment scheduled	Follow normal cadence

Order Flow Diagram

The order flow diagram provides a visual representation of replenishment flows between entities in your supply chain.

Diagram Structure

The flow diagram shows the movement of goods through your supply chain:

[Suppliers] ──Purchase Orders──→ [Warehouses] ──Transfers──→ [Warehouses] ──Fulfillment──→ [Channels]

Diagram Elements

Element	Shape	Description
Supplier	Node (rectangle)	External vendors that provide inventory via purchase orders
Warehouse	Node (rectangle)	Inventory storage locations that receive, hold, and ship goods
Channel	Node (rectangle)	Sales destinations (e.g., Shopify, Amazon) that consume inventory
Purchase Flow	Arrow (supplier → warehouse)	Purchase orders from suppliers, showing quantity and expected dates
Transfer Flow	Arrow (warehouse → warehouse)	Inter-warehouse transfers, showing quantity and transit time
Fulfillment Flow	Arrow (warehouse → channel)	Demand consumption from channels
Flow Volume	Line thickness	Thicker lines indicate larger quantities being moved

Flow Information

Each flow line displays:

Direction — where goods are moving from and to
Quantity — number of units in the order or transfer
Timeline — when the movement is expected to occur
Associated orders — links to the underlying transactions

Filtering the Flow

Focus the diagram on specific aspects:

Filter	Effect
By Time Period	View flows for the next 30, 60, or 90 days
By Warehouse	See flows to/from a specific warehouse
By SKU	Filter to a specific product across all locations

Chart Interactions

Zooming

Scroll to zoom in and out on the time axis
Click and drag to pan across the timeline
Double-click to reset the view to the full simulation horizon

Hovering

Hover over any point on the chart to see detailed information for that day:

Date — the specific simulation day
BOH — beginning on hand quantity
EOH — end on hand quantity
Consumption — total units consumed that day (sales forecast, transfers out)
Supply — total units received that day (order landings, transfers in)
Events — specific events occurring on that day (order placed, order received, transfer)

Filtering

Control what the chart displays:

Filter	Effect
SKU	Show the projection for a specific product
Warehouse	Show the projection for a specific location
Date Range	Adjust the visible time horizon

Navigate through the projection one day at a time:

Use the date picker or arrow buttons to step through days
See the inventory state for each specific day
View all events (orders received, consumption, transfers) that occur on that day

Accessing Charts

From Supply Simulation

Run Simulation

Execute a supply simulation to generate projection data

View Results

Navigate to the simulation results view

Select SKU/Warehouse

Choose the SKU-warehouse pairing to visualize

View Chart

The inventory forecast chart displays automatically for the selected pairing

From Inventory Dashboard

Go to Inventory

Navigate to the Inventory dashboard

Select SKU

Click on a SKU to see its details

View Forecast & Flow

Access the Forecast tab to see the inventory projection chart, or the Flow tab to see the order flow diagram

Events Panel

The events panel provides a detailed list of all supply chain events that affect inventory for the selected SKU-warehouse pairing.

Event Details

Click on any event marker in the chart to open the events panel, which shows:

Field	Description
Event Type	Purchase order, transfer, production, or consumption
Date	When the event occurs
Quantity	Number of units involved
Source / Destination	Where goods are coming from or going to
Order Reference	Link to the underlying transaction or recommendation
Status	Whether the event is from an existing order (User Route) or a recommendation (System Route)

Event Types in the Panel

Icon	Event	Effect on Inventory
📋	Order Placed	No immediate inventory change; order is in transit
📦	Order Received	Inventory increases at destination warehouse
🚚	Order Shipped	Inventory in transit (not yet available)
➡️	Transfer Out	Inventory decreases at source warehouse
⬅️	Transfer In	Inventory increases at destination warehouse
🏭	Production Complete	Finished goods added to inventory
📉	Sales Consumption	Inventory decreases based on demand forecast

Understanding Chart Patterns

Healthy Inventory Pattern

          ───────────
         /           \
────────/             \────────
        ↑              ↑
     Restock        Restock

Regular replenishment cycles with smooth transitions
Inventory stays above safety stock at all times
Periodic rises (restocks) and gradual declines (consumption)

────────────
            \
             \
              \────────
               ↑
            Stockout!

Continuous decline without replenishment
Inventory will hit zero — needs urgent action
Check for missing orders or insufficient supply

Safety Stock Breach

────────────
            \        ┌───── Restock arrives
             \      /
- - - - - - -\- - /- - -  Safety stock line
               \/

Inventory dips below safety stock before restock arrives
The simulation may accelerate order dates to prevent this
Consider increasing safety stock or shortening cadence

Overstock Situation

────────────────────
                    Overstock threshold
      ─────────────
     /
────/
    ↑
 Large order (possibly due to MOQ)

Inventory exceeds the overstock threshold
Often caused by large MOQ requirements
Consider negotiating lower MOQ or adjusting order timing

Using Charts for Decisions

Identifying Issues

Chart Signal	Action
Projection crosses below safety stock	Review and accept replenishment recommendations
Projection reaches zero	Place an urgent order immediately
Projection above overstock threshold	Reduce or defer planned orders
Large gap between current and recommended lines	Review system recommendations for improvement
Erratic pattern with sharp spikes	Review forecast accuracy and order timing

Validating Recommendations

Before accepting system recommendations:

View the recommended projection (green line)
Verify that safety stock breaches are resolved
Check that order timing makes sense given lead times
Confirm no new overstock issues are created
Review the events panel for order details

Chart Customization

Display Options

Option	Description
Show Safety Stock	Toggle the safety stock threshold line
Show Overstock	Toggle the overstock threshold line
Show Target	Toggle the target stock threshold line
Show Orders	Mark order placement and arrival points
Show Demand	Overlay the demand forecast on the chart

Export Options

Export charts for reports or sharing:

Format	Best For
SVG	High quality, scalable graphics for presentations
PNG	Easy sharing via email or chat

Best Practices

Check Critical SKUs First

Prioritize chart review for:

High-value products with significant financial impact
Long lead time items where delays are costly
Fast-moving SKUs that can stockout quickly
New products with uncertain demand patterns

Compare Both Projections

Always review both the current and recommended projections:

Understand what happens with your existing plan
See what the system recommends
Identify the gap between the two
Make informed decisions about which recommendations to accept

Use the Events Panel

Don’t just look at the lines — dig into the events:

Click on event markers to see details
Understand what’s driving inventory changes
Verify that order timing aligns with your expectations

Share Visuals with Stakeholders

Troubleshooting

Chart Not Loading

Possible causes:

Simulation has not been run or is still processing
No data exists for the selected SKU-warehouse pairing
Browser performance issue with large datasets

Solutions:

Wait for the simulation to complete before viewing charts
Verify the SKU-warehouse pairing has forecast data and configuration
Try refreshing the page or selecting a different pairing first

Flat Line at Zero

Possible causes:

No beginning inventory and no incoming supply
All supply events are beyond the visible date range
SKU-warehouse pairing has no demand forecast

Solutions:

Check that opening inventory is configured correctly
Extend the date range to see if supply events exist further out
Verify the demand forecast covers the simulation period

Threshold Lines Not Showing

Possible causes:

Safety stock or overstock thresholds not configured
Display options have thresholds toggled off

Solutions:

Configure safety stock and overstock in Simulation Configurations
Check chart display options to ensure threshold lines are enabled

Next Steps

Running Simulations

Execute simulations to generate chart data

Configurations

Configure safety stock, cadence, and thresholds

What-If Scenarios

Test scenarios and compare projections

Forecasts & Flow

Inventory forecast and flow views

Getting Started

Product Catalog

Inventory Management

Demand Forecasting

Transactions

Sales Channels

Supply Simulation

Integrations

Analytics

Administration

Tips & Shortcuts

​Simulation Charts

​Inventory Forecast Chart

​Daily Inventory Values

​Consumption Events

​Supply Events

​Two Projection Lines

​Threshold Lines

​Reading Threshold Zones

​Alert Levels

​Order Flow Diagram

​Diagram Structure

​Diagram Elements

​Flow Information

​Filtering the Flow

​Chart Interactions

​Zooming

​Hovering

​Filtering

​Day-by-Day Navigation

​Accessing Charts

​From Supply Simulation

​From Inventory Dashboard

​Events Panel

​Event Details

​Event Types in the Panel

​Understanding Chart Patterns

​Healthy Inventory Pattern

​Trending to Stockout

​Safety Stock Breach

​Overstock Situation

​Using Charts for Decisions

​Identifying Issues

​Validating Recommendations

​Chart Customization

​Display Options

​Export Options

​Best Practices

​Troubleshooting

​Chart Not Loading

​Flat Line at Zero

​Threshold Lines Not Showing

​Next Steps

Running Simulations

Configurations

What-If Scenarios

Forecasts & Flow

Simulation Charts

Inventory Forecast Chart

Daily Inventory Values

Consumption Events

Supply Events

Two Projection Lines

Threshold Lines

Reading Threshold Zones

Alert Levels

Order Flow Diagram

Diagram Structure

Diagram Elements

Flow Information

Filtering the Flow

Chart Interactions

Zooming

Hovering

Filtering

Day-by-Day Navigation

Accessing Charts

From Supply Simulation

From Inventory Dashboard

Events Panel

Event Details

Event Types in the Panel

Understanding Chart Patterns

Healthy Inventory Pattern

Trending to Stockout

Safety Stock Breach

Overstock Situation

Using Charts for Decisions

Identifying Issues

Validating Recommendations

Chart Customization

Display Options

Export Options

Best Practices

Troubleshooting

Chart Not Loading

Flat Line at Zero

Threshold Lines Not Showing

Next Steps