Pattern limit reached
pattern.limit_reached · HTTP 403
What it means
The workspace's tier allows no more pinned patterns, so the new one was not saved. The problem's limit and tier fields give the maximum and the tier.
What to do
Delete a pinned pattern you no longer need, or upgrade the workspace to a tier that allows more.
Every error the API returns is a JSON problem (RFC 9457) whose code names it and whose type links to its page here. See the docs for how the API works.