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# Chargeback.fetchByMerchantTransactionId

The `fetchByMerchantTransactionId` method returns one or more `Chargeback` objects for the transaction whose ID assigned by you (`merchantTransactionId`) matches the input. Multiple chargebacks may be associated with one transaction, because a customer can charge back a transaction’s line items separately.

## 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.

*merchantTransactionId*: your ID (`merchantTransactionId`) of the transaction whose chargebacks you wish to fetch.

## Output

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

*chargebacks*: an array of one or more `Chargebacks` associated with the transaction whose ID matches the one specified as the input parameter.

## 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: - `Unable to load chargebacks by merchantTransactionId *input-merchantTransactionId:* No match.` - `Unable to load chargebacks by merchantTransactionId *input-merchantTransactionId: error-description*.` - *Must specify merchant transaction id to load by!* |

## Example

```

$cb = new Chargeback();

$ret = $cb->fetchByMerchantTransactionId($txnId);
if ($ret['returnCode'] == 200) {
$fetchedChargebacks = $ret['chargebacks'];
   if ($fetchedChargebacks != null) {
      foreach ($fetchedChargebacks as $chargeback) {

         // process a fetched chargeback here …
         $status = $chargeback->getStatus();
         $amount = $chargeback->getAmount();
      }
   }
}
```

**Parent topic:**[Chargeback Methods](../topics/Chargeback_Methods)


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