medusa-store/www/apps/resources/app/commerce-modules/stock-location/links-to-other-modules/page.mdx

---
products:
  - fulfillment
  - inventory
  - sales channel
---

import { CodeTabs, CodeTab, Table } from "docs-ui"

export const metadata = {
  title: `Links between Stock Location Module and Other Modules`,
}

# {metadata.title}

This document showcases the module links defined between the Stock Location Module and other Commerce Modules.

## Summary

The Stock Location Module has the following links to other modules:

<Note title="Tip">

Read-only links are used to query data across modules, but the relations aren't stored in a pivot table in the database.

</Note>

<Table>
  <Table.Header>
    <Table.Row>
      <Table.HeaderCell>
        First Data Model
      </Table.HeaderCell>
      <Table.HeaderCell>
        Second Data Model
      </Table.HeaderCell>
      <Table.HeaderCell>
        Type
      </Table.HeaderCell>
      <Table.HeaderCell>
        Description
      </Table.HeaderCell>
    </Table.Row>
  </Table.Header>
  <Table.Body>
    <Table.Row>
      <Table.Cell>
        [FulfillmentSet](/references/fulfillment/models/FulfillmentSet) in [Fulfillment Module](../../fulfillment/page.mdx)
      </Table.Cell>
      <Table.Cell>
        [StockLocation](/references/stock-location-next/models/StockLocation)
      </Table.Cell>
      <Table.Cell>
        Stored - many-to-one
      </Table.Cell>
      <Table.Cell>
        [Learn more](#fulfillment-module)
      </Table.Cell>
    </Table.Row>
    <Table.Row>
      <Table.Cell>
        [FulfillmentProvider](/references/fulfillment/models/FulfillmentProvider) in [Fulfillment Module](../../fulfillment/page.mdx)
      </Table.Cell>
      <Table.Cell>
        [StockLocation](/references/stock-location-next/models/StockLocation)
      </Table.Cell>
      <Table.Cell>
        Stored - many-to-many
      </Table.Cell>
      <Table.Cell>
        [Learn more](#fulfillment-module)
      </Table.Cell>
    </Table.Row>
    <Table.Row>
      <Table.Cell>
        [InventoryLevel](/references/inventory-next/models/InventoryLevel) in [Inventory Module](../../inventory/page.mdx)
      </Table.Cell>
      <Table.Cell>
        [StockLocation](/references/stock-location-next/models/StockLocation)
      </Table.Cell>
      <Table.Cell>
        Read-only - has many
      </Table.Cell>
      <Table.Cell>
        [Learn more](#inventory-module)
      </Table.Cell>
    </Table.Row>
    <Table.Row>
      <Table.Cell>
        [SalesChannel](/references/sales-channel/models/SalesChannel) in [Sales Channel Module](../../sales-channel/page.mdx)
      </Table.Cell>
      <Table.Cell>
        [StockLocation](/references/stock-location-next/models/StockLocation)
      </Table.Cell>
      <Table.Cell>
        Stored - many-to-many
      </Table.Cell>
      <Table.Cell>
        [Learn more](#sales-channel-module)
      </Table.Cell>
    </Table.Row>
  </Table.Body>
</Table>

---

## Fulfillment Module

A fulfillment set can be conditioned to a specific stock location.

Medusa defines a link between the `FulfillmentSet` and `StockLocation` data models.

![A diagram showcasing an example of how data models from the Fulfillment and Stock Location modules are linked](https://res.cloudinary.com/dza7lstvk/image/upload/v1712567101/Medusa%20Resources/fulfillment-stock-location_nlkf7e.jpg)

Medusa also defines a link between the `FulfillmentProvider` and `StockLocation` data models to indicate the providers that can be used in a location.

![A diagram showcasing an example of how data models from the Fulfillment and Stock Location modules are linked](https://res.cloudinary.com/dza7lstvk/image/upload/v1728399492/Medusa%20Resources/fulfillment-provider-stock-location_b0mulo.jpg)

### Retrieve with Query

To retrieve the fulfillment sets of a stock location with [Query](!docs!/learn/fundamentals/module-links/query), pass `fulfillment_sets.*` in `fields`:

<Note>

To retrieve the fulfillment providers, pass `fulfillment_providers.*` in `fields`.

</Note>

<CodeTabs group="relation-query">
  <CodeTab label="query.graph" value="method">

```ts
const { data: stockLocations } = await query.graph({
  entity: "stock_location",
  fields: [
    "fulfillment_sets.*",
  ],
})

// stockLocations[0].fulfillment_sets
```

  </CodeTab>
  <CodeTab label="useQueryGraphStep" value="step">

```ts
import { useQueryGraphStep } from "@medusajs/medusa/core-flows"

// ...

const { data: stockLocations } = useQueryGraphStep({
  entity: "stock_location",
  fields: [
    "fulfillment_sets.*",
  ],
})

// stockLocations[0].fulfillment_sets
```

  </CodeTab>
</CodeTabs>

### Manage with Link

To manage the stock location of a fulfillment set, use [Link](!docs!/learn/fundamentals/module-links/link):

<CodeTabs group="relation-link">
  <CodeTab label="link.create" value="method">

```ts
import { Modules } from "@medusajs/framework/utils"

// ...

await link.create({
  [Modules.STOCK_LOCATION]: {
    stock_location_id: "sloc_123",
  },
  [Modules.FULFILLMENT]: {
    fulfillment_set_id: "fset_123",
  },
})
```

  </CodeTab>
  <CodeTab label="createRemoteLinkStep" value="step">

```ts
import { Modules } from "@medusajs/framework/utils"
import { createRemoteLinkStep } from "@medusajs/medusa/core-flows"

// ...

createRemoteLinkStep({
  [Modules.STOCK_LOCATION]: {
    stock_location_id: "sloc_123",
  },
  [Modules.FULFILLMENT]: {
    fulfillment_set_id: "fset_123",
  },
})
```

  </CodeTab>
</CodeTabs>

---

## Inventory Module

Medusa defines a read-only link between the [Inventory Module](../../inventory/page.mdx)'s `InventoryLevel` data model and the `StockLocation` data model. Because the link is read-only from the `InventoryLevel`'s side, you can only retrieve the stock location of an inventory level, and not the other way around.

### Retrieve with Query

To retrieve the stock locations of an inventory level with [Query](!docs!/learn/fundamentals/module-links/query), pass `stock_locations.*` in `fields`:

<CodeTabs group="relation-query">
  <CodeTab label="query.graph" value="method">

```ts
const { data: inventoryLevels } = await query.graph({
  entity: "inventory_level",
  fields: [
    "stock_locations.*",
  ],
})

// inventoryLevels[0].stock_locations
```

  </CodeTab>
  <CodeTab label="useQueryGraphStep" value="step">

```ts
import { useQueryGraphStep } from "@medusajs/medusa/core-flows"

// ...

const { data: inventoryLevels } = useQueryGraphStep({
  entity: "inventory_level",
  fields: [
    "stock_locations.*",
  ],
})

// inventoryLevels[0].stock_locations
```

  </CodeTab>
</CodeTabs>

---

## Sales Channel Module

A stock location is associated with a sales channel. This scopes inventory quantities in a stock location by the associated sales channel.

Medusa defines a link between the `SalesChannel` and `StockLocation` data models.

![A diagram showcasing an example of how resources from the Sales Channel and Stock Location modules are linked](https://res.cloudinary.com/dza7lstvk/image/upload/v1716796872/Medusa%20Resources/sales-channel-location_cqrih1.jpg)

### Retrieve with Query

To retrieve the sales channels of a stock location with [Query](!docs!/learn/fundamentals/module-links/query), pass `sales_channels.*` in `fields`:

<CodeTabs group="relation-query">
  <CodeTab label="query.graph" value="method">

```ts
const { data: stockLocations } = await query.graph({
  entity: "stock_location",
  fields: [
    "sales_channels.*",
  ],
})

// stockLocations[0].sales_channels
```

  </CodeTab>
  <CodeTab label="useQueryGraphStep" value="step">

```ts
import { useQueryGraphStep } from "@medusajs/medusa/core-flows"

// ...

const { data: stockLocations } = useQueryGraphStep({
  entity: "stock_location",
  fields: [
    "sales_channels.*",
  ],
})

// stockLocations[0].sales_channels
```

  </CodeTab>
</CodeTabs>

### Manage with Link

To manage the stock locations of a sales channel, use [Link](!docs!/learn/fundamentals/module-links/link):

<CodeTabs group="relation-link">
  <CodeTab label="link.create" value="method">

```ts
import { Modules } from "@medusajs/framework/utils"

// ...

await link.create({
  [Modules.SALES_CHANNEL]: {
    sales_channel_id: "sc_123",
  },
  [Modules.STOCK_LOCATION]: {
    sales_channel_id: "sloc_123",
  },
})
```

  </CodeTab>
  <CodeTab label="createRemoteLinkStep" value="step">

```ts
import { Modules } from "@medusajs/framework/utils"
import { createRemoteLinkStep } from "@medusajs/medusa/core-flows"

// ...

createRemoteLinkStep({
  [Modules.SALES_CHANNEL]: {
    sales_channel_id: "sc_123",
  },
  [Modules.STOCK_LOCATION]: {
    sales_channel_id: "sloc_123",
  },
})
```

  </CodeTab>
</CodeTabs>