In almost every file you are able to add documents as attachments. It is possible that you get the error message:
"Request Entity Too Large The requested resource/cgi-bin/WebObjects/Klant.woa/374/wo/W22uyYJzUNHa3xb7pTQ3Sq3C8fn/188.8.131.52.3does not allow request data with POST requests, or the amount of data provided in the request exceeds the capacity limit."
The size of the attachment is to big. The maximum size is 4 MB
Reduce the size of the attachment so it is less than 4 MB.
Remove images from the attachment;
In the attachment, click Ctrl+A, Ctrl+C, to select all the text and copy it. Make a new document and click Ctrl+V to paste it and save this document. This way all version and undo information is removed from the text.
Use a compression program