# Create a discount campaign

Create a test promotion that subtracts EUR 10.00 from eligible carts with at least EUR 100.00 subtotal.
This is a cart promotion, so the eligibility condition uses cart context.

## Before you begin

Use Admin discount permissions and a test store with EUR prices.
Choose a test campaign window and replace both timestamp placeholders below with UTC ISO 8601 values.
Use a short test window and avoid overlapping production campaigns.
Read [Cart discounts and targets](/concepts/discounts/cart-discounts) for the eligibility-versus-target distinction.

## 1. Create the code resource


Admin API

```graphql
mutation CreateCampaignCode($input: CartDiscountCodeCreateInput!) {
  cartDiscountCodeCreate(input: $input) {
    cartDiscountCode { id codes { value } }
    errors { __typename ... on UserError { message } }
  }
}

```


Variables

```json
{
  "input": {
    "name": "Lamp campaign test",
    "codes": [
      "LAMP10TEST"
    ],
    "maxApplications": 10,
    "validFrom": "<start-UTC-timestamp>",
    "validUntil": "<end-UTC-timestamp>"
  }
}

```


Retain the code resource ID.
Creating the code does not create the discount or attach the code to it.

## 2. Create and connect the discount


Admin API

```graphql
mutation CreateLampCampaign($input: CartDiscountCreateInput!) {
  cartDiscountCreate(input: $input) {
    cartDiscount { id name predicate priority }
    errors { __typename ... on UserError { message } }
  }
}

```


Variables

```json
{
  "input": {
    "name": "EUR 10 off EUR 100",
    "predicate": "currency_code == \"EUR\" && subtotal.cent_amount >= 10000",
    "priority": 100,
    "targetType": "TOTAL",
    "absoluteValue": {
      "amounts": [
        {
          "centAmount": 1000,
          "currencyCode": "EUR"
        }
      ]
    },
    "requiresDiscountCode": true,
    "discountCodes": [
      "<code-resource-id>"
    ],
    "validFrom": "<start-UTC-timestamp>",
    "validUntil": "<end-UTC-timestamp>"
  }
}

```


Replace the code-resource placeholder with the ID from step 1.
The value is absolute money, so this example avoids ambiguity between percent and factor units.
The priority is an example; review existing campaigns and their combination rules before choosing it.

## 3. Apply in a test cart


Storefront API

```graphql
mutation ApplyCampaign($input: CartDiscountCodeAddInput!) {
  cartDiscountCodeAdd(input: $input) {
    cart { id total { centAmount currencyCode } }
    errors { __typename ... on UserError { message } }
  }
}

```


Variables

```json
{
  "input": {
    "cartId": "<test-cart-id>",
    "discountCode": "LAMP10TEST"
  }
}

```


Inspect the cart's discount applications and returned totals through the [Cart reference](/api/storefront-graphql/objects/cart).
Do not infer a saving solely from the code string being present.
Tax and other configured discounts can affect the final payable amount.

## 4. Verify both sides of the rule

Test EUR carts just below and at the threshold, a cart in another currency, a missing code, an expired window, and any intended overlapping offer.
Confirm only the qualifying case gets this promotion's application.
Use [Codes and combination](/concepts/discounts/codes-and-combination) to diagnose a configured code with no saving.

## End the test

Update the intended validity window or remove the test configuration using supported Admin operations.
Do not delete unrelated campaign codes.
Re-query a fresh cart and confirm the offer no longer applies.
Existing orders keep their recorded commercial outcome.