The API described in this document is obsolete. It is documented here only for the support of legacy applications that might be using it. New applications are encouraged to use the newer, REST-based API. Older applications, too, are encouraged to switch to the newer API.
This will return an alphabetical list of all message categories in the referenced project.
<post-categories>
<post-category>
...
</post-category>
<post-category>
...
</post-category>
...
</post-categories>
This will return an alphabetical list of all file categories in the referenced project.
<attachment-categories>
<attachment-category>
...
</attachment-category>
<attachment-category>
...
</attachment-category>
...
</attachment-categories>