Rate Exceeded Error for Ad Extension on deploying more than one campaign

On Deploying more than on campaign with ad extension then its throwing RateExceededError for one of the call extension. Account gets succeed but Ad extension gets fail for one of the campaign.

Steps to reproduce

Step 1: Send a valid Deployment request with more than one campaign.
Step 2: Check the listener log.

Snippet of the log

2013-07-12 12:09:57.048 (1) [pool-5-thread-19]: Error while creating Mobile Extension for Campaign Id: 1006634
2013-07-12 12:09:57.048 (2) [pool-5-thread-19]: Unknown / unexpected exception [com.thesearchagency.adextension.exception.CampaignAdExtensionException]. msg=Error while mutating null operation
2013-07-12 12:09:57.049 (1) [pool-5-thread-19]: Exception [unhandled exception]:com.thesearchagency.adextension.exception.CampaignAdExtensionException: Error while mutating null operation at com.thesearchagency.adextension.GoogleCampaignAdExtension.mutate(GoogleCampaignAdExtension.java:194)

Actual result: Deployment gets succeed and for call extension it throws RateExceededError and Retries after 30 seconds but get fails while adding.

Expected result: The Ad extension should create for all the campaigns.

Please find attached log