It's the number of files being referenced. It's not the page size. I'm
going to assume that this is an HTML article that references a lot of
other files. I think the limit is set pretty high (1k files). The limit
was set to avoid having someone initiate a DOS attack through the
ingestion service by creating articles with lots of little 1 byte files
thus overwhelming the service. We just look at the number of files and
refuse the upload if there are too many. If you are seeing this and this
isn't...