---
title: "Set an add-on's differential price for one plan"
canonical_url: "https://twominutebilling.com/help/developers/api-reference/catalog/set-an-add-on-s-differential-price-for-one-plan"
---
# Set an add-on's differential price for one plan

<api-operation method="PUT" path="/v1/businesses/{biz}/products/{prod}/differential_prices">
<template v-slot:docs="">

## Path parameters

<table>
<thead>
  <tr>
    <th>
      Parameter
    </th>
    
    <th>
      Type
    </th>
    
    <th>
      Required
    </th>
    
    <th>
      Description
    </th>
  </tr>
</thead>

<tbody>
  <tr>
    <td>
      <code>
        biz
      </code>
    </td>
    
    <td>
      <code>
        string
      </code>
    </td>
    
    <td>
      <strong>
        yes
      </strong>
    </td>
    
    <td>
      Business id (biz_…)
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        prod
      </code>
    </td>
    
    <td>
      <code>
        string
      </code>
    </td>
    
    <td>
      <strong>
        yes
      </strong>
    </td>
    
    <td>
      The product's id (a slug id, e.g. <code>
        pro
      </code>
      
      ).
    </td>
  </tr>
</tbody>
</table>

## Headers

<table>
<thead>
  <tr>
    <th>
      Parameter
    </th>
    
    <th>
      Type
    </th>
    
    <th>
      Required
    </th>
    
    <th>
      Description
    </th>
  </tr>
</thead>

<tbody>
  <tr>
    <td>
      <code>
        Idempotency-Key
      </code>
    </td>
    
    <td>
      <code>
        string
      </code>
    </td>
    
    <td>
      no
    </td>
    
    <td>
      Safely retry writes — repeats return the original response. If a write FAILED after it had already taken effect, that failure is what repeats: the key is spent, and a new attempt needs a new key.
    </td>
  </tr>
</tbody>
</table>

## Body

The request body is **required**.

<table>
<thead>
  <tr>
    <th>
      Field
    </th>
    
    <th>
      Type
    </th>
    
    <th>
      Required
    </th>
    
    <th>
      Description
    </th>
  </tr>
</thead>

<tbody>
  <tr>
    <td>
      <code>
        plan
      </code>
    </td>
    
    <td>
      <code>
        string
      </code>
    </td>
    
    <td>
      <strong>
        yes
      </strong>
    </td>
    
    <td>
      The plan's product id (a slug id, e.g. <code>
        pro
      </code>
      
      ).
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        currency
      </code>
    </td>
    
    <td>
      <code>
        string
      </code>
    </td>
    
    <td>
      <strong>
        yes
      </strong>
    </td>
    
    <td>
      The price's currency (ISO-4217 code).
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        interval
      </code>
    </td>
    
    <td>
      <code>
        string
      </code>
    </td>
    
    <td>
      no
    </td>
    
    <td>
      The billing interval this price applies to. One of <code>
        day
      </code>
      
      , <code>
        week
      </code>
      
      , <code>
        month
      </code>
      
      , <code>
        year
      </code>
      
      .
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        amount_minor
      </code>
    </td>
    
    <td>
      <code>
        integer
      </code>
    </td>
    
    <td>
      no
    </td>
    
    <td>
      The addon's price for this plan, in minor units.
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        tiers
      </code>
    </td>
    
    <td>
      <code>
        array of object
      </code>
    </td>
    
    <td>
      no
    </td>
    
    <td>
      The price tiers, for a tiered addon price.
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        tiers.up_to_minor
      </code>
    </td>
    
    <td>
      <code>
        integer
      </code>
    </td>
    
    <td>
      no
    </td>
    
    <td>
      The upper bound of the tier.
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        tiers.unit_amount_minor
      </code>
    </td>
    
    <td>
      <code>
        integer
      </code>
    </td>
    
    <td>
      no
    </td>
    
    <td>
      The price of one unit in the tier, in minor units.
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        tiers.flat_amount_minor
      </code>
    </td>
    
    <td>
      <code>
        integer
      </code>
    </td>
    
    <td>
      no
    </td>
    
    <td>
      A flat amount for the tier, in minor units.
    </td>
  </tr>
</tbody>
</table>

## Status codes

<table>
<thead>
  <tr>
    <th>
      Status
    </th>
    
    <th>
      Meaning
    </th>
  </tr>
</thead>

<tbody>
  <tr>
    <td>
      <code>
        200
      </code>
    </td>
    
    <td>
      The upserted differential price
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        400
      </code>
    </td>
    
    <td>
      amount_minor or tiers required / bad plan
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        404
      </code>
    </td>
    
    <td>
      No such business
    </td>
  </tr>
  
  <tr>
    <td>
      <code>
        409
      </code>
    </td>
    
    <td>
      Idempotency-Key conflict — the key is already in flight, or was reused with a different request payload.
    </td>
  </tr>
</tbody>
</table>
</template>

<template v-slot:request="">

```bash [Request]
curl -X PUT "$TMBILLING_URL/v1/businesses/biz_XXXXXXXXXXXX01/products/pro/differential_prices" \
  -H "Authorization: Bearer $TMBILLING_API_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Content-Type: application/json" \
  -d '{
    "plan": "pro-monthly-usd",
    "currency": "USD",
    "interval": "day",
    "amount_minor": 2900
  }'
```

</template>

<template v-slot:response="">
<code-group>

```json [200 OK]
{}
```

```json [400 Bad Request]
{
  "error": {
    "type": "invalid_request_error",
    "message": "amount_minor or tiers required / bad plan"
  }
}
```

```json [404 Not Found]
{
  "error": {
    "type": "invalid_request_error",
    "message": "No such business"
  }
}
```

```json [409 Conflict]
{
  "error": {
    "type": "idempotency_error",
    "message": "Idempotency-Key conflict — the key is already in flight, or was reused with a different request payload."
  }
}
```

</code-group>
</template>
</api-operation>


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