This quite weird. Usually, triggering a conversion from Marketo is difficult as many mandatory infos are missing and it fails... ANd using the "convert lead" is not a good idea because the most basic options are not available (create an opportunity upon conversion, merge with an existing account or create a new one, ...)
- Some triggers or process builders in SFDC fire and perform the conversion
- You have implemented a dedupe tool such as Ring Lead that can automatically convert leads if they are duplicates with a contact
- Someone else, a human, has in fact converted the leads and did not tell you
Thanks so much for your help. This led me to check in on DupeCatcher and it's being run through the Marketo Sync user, which would explain why the conversions appear to be happening through Marketo. Not sure if I've solved it, but your reply definitely helped me narrow it down
Have a great weekend!