If the system refuses to approve your file, it could be due to one of the following reasons:
The document may be in the wrong file format. Read here on how to fix this.
The document might be too large and take up too many MB. Read here on how to reduce the size.
The document could contain blank pages. Read here on how to remove blank pages.
The system can only upload one file at a time. Read here on how to combine pages.
The document may need to be "cleaned." Read here on how to do this.
Read here on how to scan documents into your computer.