The maxRequestLength setting controls the maximum request size allowed for a file upload. This value is represented in kilobytes, and the default value is 20480 KB (20 MB). If users need to upload files larger than 20480 KB, increase the maxRequestLength value. This setting is found in the httpRuntime element in the Mobile Applications Broker Server's Web.config file.
The maxRequestLength setting specifies the maximum request size, not the maximum file size. When a file is sent from the Mobile Applications Broker Server to the Application Server, the request size is larger than the file size due to encoding. The Application Server's default maxRequestLength value is 30000 KB.