This API works, but does not allow you to specify the comment author. It ignores the "author" field and instead uses the logged-in user. Naturally, in an integration scenario, you dont want to use the logged-in user but rather be able to specify who has made the comment.

Please not that not all SOAP APIs work in that manner: the createIssue API (which is very similar in nature to addComment) takes in a "reporter" field and uses it to capture the user who reported the issue, this gives the external application the ability to correctly create an issue on behalf of a user, while such ability does not exist when you try to create a comment, thus, making the createComment API somewhat pointless. I think this can be easily fixed by adding a new "reporter" attribute to the RemoteComment object or using the existing "author" or "updateAuthor" attributes.

This is a major issue for our company as our service depends on integration with Jira over SOAP. Thank you for your attention.