We've been getting reoccurring web services error 615 (concurrent access limit reached) every day at the same time. We don't have any scheduled tasks running either in Marketo or in our integrated CRM near the time of the error, and aren't using any other API-related integrations. Maybe solutions for troubleshooting already exist, but I'm having trouble digging anything up in the docs or in past community posts. Any suggestions?
I would probably reach out to Support. I'm hitting the same thing with other errors and did some digging and there isn't enough information that tells me which campaigns or leads are affected or how to fix it. This post might be helpful, but like I said, I'd create a support ticket.