Attach documents in ImmiAccount after you have paid the first instalment of the visa application fee.
Make sure you have prepared your documents for attaching. Attach each document only once. There is information about preparing your documents.
You can upload a maximum of 60 documents per applicant and each document can have many pages. For example, if providing photographs, you can combine several photographs into one document (such as a PDF file). The file size limit for each document is 5MB.
If you reach your document limit, you will not be able to attach more documents. You will have to wait for your case officer to contact you and make arrangements to provide more documents.
Documents can also be attached to ImmiAccount after lodgement.
More information is available about attaching documents to an online application.