The error types in this file that have not yet been converted are documented here:
Missing submodel {696627A6-5D4B-42A0-B473-9B6C7EBA2AB8}.ctl - not extracted in INFI90Harmon583DA1C9C23D4A.StationRead_
The usual sources of this error are:
Our DBDOC picture of the graphic will not be valid if you have missing symbols or submodels.
DBDOC actually makes links to these missing symbols for you. For the example above, you can see this here.
The Missing Symbols Index actually lists all missing symbols, and each symbol has a list and link to the graphics it is supposed to be found on. DBDOC thus makes it easy to find where these symbols are on the graphic so you can solve the problem that the missing symbol represents.
If you end up with numerous missing symbols, it is probable that your build is not completely valid. Work with us to resolve the problem so DBDOC will be the most use to you.