credit_limit_reached
Status 409. The daily limit for points changed through the API has been reached.
What it means
Points changes made with keys have reached your account's limit in this direction: at most 100,000 points added and 100,000 taken away in any 24 hours, across all your keys. Points given back by cancelling a code are not counted. limit_points and used_points show where the account stands. Nothing was changed.
What to do
Make a large change in the Matrix Rewards app in your Shopify admin, which has no daily limit. Or wait until earlier changes are more than 24 hours old and send it with a new Idempotency-Key: this answer is kept for the one you used.
Safe to send again?
No. The same request will get the same answer.
What else the answer carries
direction:creditfor points added,debitfor points taken away.limit_points: The account's limit in this direction.used_points: What the account has already moved in this direction in the window.
Where you can meet it
POST /members/{member_key}/adjustments: Add points to a member's balance, or take them away
Every code, and the shape of an error answer: Errors.