How can I add multiple Virtual Machines in parallel to a cloud service?

I have a requirement of adding multiple VMs to the same cloud service very quickly, basically in a parallel fashion. But when I try to do this I get this error

 Error xmlns="http://schemas.microsoft.com/windowsazure" xmlns:i="http://www.w3.org/2001/XMLSchema-instance"><Code>ConflictError</Code><Message>Windows Azure is currently performing an operation with x-ms-requestid c86e104f690da3dda7e0461b23c7ae30 on this deployment that requires exclusive access.</Message></Error>

I also found this issue on the python sdk 

https://github.com/Azure/azure-sdk-for-python/issues/154

I would appreciate if someone from Microsoft replies asap.