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# Campaign.activateCode

Activates a Coupon Code. Use this method to activate individual Coupon Codes before they may be used.

Coupon Codes may not be activated if their Campaign is not `Active`.

Use the `validateCode` method to activate a Code at the same time it is validated.

## Input

*srd*: sparse response description, a SOAP string (which must be a JSON object), in which you specify the elements you want returned.This parameter enables the calling system to constrain a `method` call to return only components you specify. This gives you greater control over returned content, and improves response time within the Vindicia platform by reducing the processing needed for the call.

Some fields are required, either practically or in the WSDL, and will be returned regardless of the *srd*. A null *srd* returns the complete response.

*code*: the Coupon Code to be activated. Because all Coupon Codes are unique, it is sufficient to specify the Code.

## Output

*return*: an object of type `Return` that indicates the success or failure of the call.

## Returns

In addition to those listed in [The Return Object](The_Return_Object), this call returns:

| Return Code | Return String |
| - | - |
| `400` | One of the following: - `Code *code* doesn't represent a CouponCode.` - `Code *code* can't be activated: *error-description*.` |

## Example

```

$camp = new Campaign();
   $response = $camp->activateCode(
      'promo123', // the campaign code
   ); 
```

**Parent topic:**[Campaign Methods](../topics/Campaign_Methods)


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