The SOAP "List" functions use an offset. For these functions, the returned values (such as licenses, customers, etc.) are packed into arrays of 100 elements. You can use an offset greater than 0 to get additional returned values. For example, for GetCustomerList: If you have 321 customers, you would run this method 4 times using the offsets 0, 100, 200, 300. The first 3 responses will have 100 customers each, and the last response will have 21 customers.