> ## Documentation Index
> Fetch the complete documentation index at: https://docs.slm.m1amdocs.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Campaign.activateCampaign

Sets the state of an `Inactive` or `Pending` `Campaign` to `Active`.

This method will fail if `CouponCodes` have been created, but not yet retrieved.

This method fails silently if the Campaign is already `Active`. Activating a Campaign from `Pending` sets the offer date to the current date.

## 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.

*campaign*: the `Campaign` object to be activated. Identify this object with its VID or `campaignId`.

*forcePending*: a Boolean flag which, if set to `true`, allows the campaign to be activated, even from the `Pending` state. If this flag is `false` or omitted, the Campaign must be in the `Inactive` state to be activated.

## 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: - `Failed to update SOAP object in DB.` - `Current state of *<state>* is an invalid state for Campaign activation.` - `Failed to obtain SOAP object from DB.` - `Tried to activateCampaign without doing createCampaign first.` - `Can't activate campaign.` |

## Example

```

$camp = new Campaign();
   $camp->setCampaignId('camp132');
   $response = $camp->activateCampaign(false);
      // false is for the forcePending parameter

   // check $response
```

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


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