🔍 Overview
If you encounter a quota limit error when trying to add a new OTTO site — even though your OTTO slots appear available — the most likely cause is your Site Audit project quota. OTTO Sites and Site Audit Projects are two separate quotas, but OTTO always attaches to a Site Audit project for the same domain. This article explains how the two quotas work together and how to free up space.
📦 How the Two Quotas Work
Your plan includes two separate limits:
- OTTO Sites — the number of sites that can have OTTO active.
- Site Audit Projects — the number of Site Audit projects you can run.
They are not one shared pool, but they are connected: adding OTTO to a site requires that site's Site Audit project to exist. If the domain does not already have one, a Site Audit project is created automatically first, and then the OTTO project is added.
- If the domain already has a Site Audit project, adding OTTO uses one OTTO site slot only.
- If the domain is new, a Site Audit project will be created automatically first, so you need a free Site Audit project slot (for that domain's Site Audit) and a free OTTO site slot.
For example, if all your Site Audit project slots are in use by other domains, you cannot add OTTO to a brand-new domain, even if you still have OTTO site slots available.
🚨 Why the Error Appears
The error appears when one of the two quotas is full: either your OTTO Sites limit is reached, or the new domain has no Site Audit project and your Site Audit Projects limit is reached.
✅ How to Resolve the Conflict
- Check your OTTO Sites usage against your OTTO Sites limit.
- Check your Site Audit Projects usage against your Site Audit Projects limit.
- If Site Audit Projects is full, remove Site Audit projects for domains you no longer need to free a slot for the new domain.
- If OTTO Sites is full, remove OTTO from sites you no longer manage, or add OTTO site slots with an OTTO top-up.
- Try adding the OTTO site again.
💡 Tips for Managing Your Quota
- Review both quotas regularly so you only use slots for domains you are actively working on.
- Remember OTTO top-ups add OTTO site slots only — they do not increase your Site Audit Projects limit.
- Plan ahead when onboarding new clients: before adding OTTO to a new domain, confirm you have a free Site Audit project slot and a free OTTO site slot.
If you need further assistance, open the chat widget in the bottom-right corner of the platform and type human teammate to be connected with a member of our team.