The Comodo APIs can be accessed with a SOAP client.
The SSL Certificate API supports enrolling new certificate requests, renewing existing certificates and collecting certificates. See the API documentation for additional details.
The InCommon API documentation is linked in the last section of this page: https://www.incommon.org/cert/repository/index.html
Basic information about the possible error codes is provided in the Comodo API documentation; but some of the error codes can have multiple causes. Additional anecdotal details are provided here as a community reference.
# TODO: Lay out preferred order of resources for handling questions...
To join the InCommon certificate community discussion (which has included discussion of how to best leverage Certificate API's), consider joining the InCommon certificate mailing list: inc-cert@incommon.org
If you get an error not covered in the API Documentation (see [https://www.incommon.org/cert/repository/index.html|https://www.incommon.org/cert/repository/index.html]), please submit a bug report.
# TODO: Add a link to the Bug tracking system.