Too many triggers?

When trying to publish a workflow, I get the following error:

Unable to register Google Forms trigger. The error from Google is: Exception: This script has too many triggers. Triggers must be deleted from the script before more can be added.. The user account used was: [[email protected]]

I imagine this is related to limitations within Google on the number of triggers an Apps Script file can have. Is that the case? Is there a way to resolve this? How is a trigger defined (e.g. the number of Google functions in a workflow?)?.