...
Email support for the API is available at cmapi@comodo.com, Monday through Friday, 4 AM - 8 PM Eastern Time. See the Certificate Service support page for a detailed listing of all support options. You may need to also copy your request to csmsupport@comodo.com; see 'Known Issues' below.
Documentation
PDF documentation for the SSL Certificate API and the Client Certificate API are linked on the repository page. Comodo also provides online API documentation.
...
- -32 = The two phrase should be the same! Check your revocation phrase ('phrase' parameter). It appears that it cannot be left as empty string.
- -37 - (Undocumented). This has been confirmed to be a bug by Comodo support. See 'Known Issues', below.
...