You will need to look at the permissions for all your existing projects, removing anything that lets the vendors into them. Look for generic group access like "jira users" and, probably most importantly, the common "anyone who can log in"
Once you have removed all the routes into the other projects, you'll be able to grant vendors access to a single project.
Hey there Cloud Community members! We’re excited to give you the first glimpse of the new home for business teams on Jira — Jira Work Management. Jira Work Management is the next generation of J...
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