This is an issue in the following situations:

• The DITA map is in a directory that is a peer to directories that contain referenced objects.
• The DITA map is in a directory that is below the directories that contain the referenced objects.

Let's assume that the directory structure for the DITA content looks like the following:

maps
topics
images

The DITA map is in the maps directory, the topics are in the topics directory, and the images are in the images directory.

Let's assume that you run the HTML5 transformation and specify an output directory of C:\A-test. By default, The DITA-OT uses the generate.outer.copy parameter with a value of 1. Output is not built for the topics. You receive only the following output:

C:\A-test
--- index.html
--- commonltr.css
--- commonrtl.css

The index.html file contains the navigation structure, but all the links are broken, since no HTML5 files were built for the topics.

Now your output directory structure looks like this:

C:\A-test
--- images\
--- maps\
--- topics\

The index.html file is in the maps directory, and the CSS and other files are located in the output directory, C:\A-test. Copying the output directory is simplified.