What is the permissible size of files that can be uploaded in the response window?
​​The maximum permitted size for a single attachment is 5 MB. In case you have more than 1 document to upload, you can put them together in a zipped folder and upload the folder. The maximum size of all attachments in a zipped folder should be 50 MB. If the size of the single document or the zipped folder exceeds the permitted limit, you can optimize the document/folder by reducing the file size.​​