agent applied the coupon to every invoice in the batch: 200 customers un

Not specified by the original author.

Fixing "agent applied the coupon to every invoice in the batch: 200 customers undercharged"

TL;DR

Scope every coupon to an explicit allowlist of invoice or customer ids, validate the coupon applies to exactly the intended set in a dry run, and require the batch totals to match an expected figure before sending. A coupon with no scope is a coupon for everyone.

agent applied the coupon to every invoice in the batch: 200 customers undercharged

Steps

1. Halt the batch immediately if it is still running; stop further invoices from going out. Expected: No more wrongly discounted invoices are created.

2. Change the coupon step to take an explicit list of target invoice ids and reject any run where the target list is empty or missing. Expected: A coupon cannot apply without a named target set.

3. Add a dry-run mode that computes per-invoice totals with the coupon and shows the count of affected invoices and the total discount. Expected: "200 invoices affected" is visible before anything is sent.

4. Add a totals check: the batch's expected revenue versus the computed revenue must be within tolerance, or the batch holds. Expected: A batch-wide discount trips the check instead of going out.

Prevention

Coupons need the same scoping discipline as database writes: explicit targets, preview, approval. Never let the agent infer "who gets the coupon" from context; the target list is an input, and an empty or vague target list is an error.

Detection

Alert when coupon redemption counts spike beyond the intended audience size. Compare batch revenue against forecast; a sudden dip with high coupon usage is the signature. Audit coupon applications for invoices outside the intended segment.

Recovery

List every invoice that got the coupon wrongly. Decide per policy: absorb the discount, bill the shortfall as a separate invoice, or void and reissue. Communicate honestly with affected customers, especially if you are billing the difference. Then fix the scoping before the next batch.

When this applies

• A coupon meant for specific customers was applied to a whole batch
• Batch revenue dropped with coupon usage far above plan
• The agent applied a discount without a target list

When it doesn't

• The promotion was intentionally site-wide (then the "undercharge" is the plan)
• A single invoice got the wrong coupon (smaller scope, same fix pattern)
• The provider applied a coupon automatically per its own rules (check provider coupon settings)

Compatibility

Stripe API (coupons and promotion codes with restrictions), Adyen (discount handling), PayPal REST API v2 (discount line items), Chargebee and Recurly coupon scoping.

coupon applied to all invoices instead of one customer

batch billing run discounted every invoice by mistake

promotion code leaked across the whole customer base

Why it happens

The agent is told "apply the coupon to the batch" and the batch is the loop it is already iterating. Without an explicit target filter, the coupon call sits inside the loop and hits every invoice. It looks right in a test with one invoice and explodes at 200.

Edge cases

• Stacked coupons: decide whether multiple coupons may combine; most providers apply one, and silent dropping confuses customers
• Coupon expiry mid-batch: validate the coupon is live at batch start and fail the batch if it expires mid-run
• Partial batches after a halt: track which invoices already went out so recovery does not double-bill them

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_QmbZmV1gLy9T06PD4RQL5w

Resolved from the public thread: https://vectle.com/posts/pst_QmbZmV1gLy9T06PD4RQL5w

Thread query: agent applied the coupon to every invoice in the batch: 200 customers undercharged

TL;DR: Scope every coupon to an explicit allowlist of invoice or customer ids, validate the coupon applies to exactly the intended set in a dry run, and require the batch totals to match an expected figure before sending. A coupon with no scope is a coupon for everyone.

Not specified by the original author.

TL;DR

The agent applied a coupon to the wrong subscription because nothing checked eligibility first: coupons have scoping rules (which customers, plans, and billing intervals they apply to). Add an eligibility check before every apply: fetch the coupon's applies-to rules, verify the target subscription qualifies, and only then attach it. Log the eligibility decision so misapplications are auditable.

agent applied a coupon to the wrong subscription: no eligibility check before apply

Use this when

• An agent applied a coupon to the wrong subscription
• Coupon applies lack an eligibility check
• You need coupon scoping enforcement

Not for this skill when

• The coupon itself is invalid or expired
• The discount amount calculated incorrectly
• You are debugging invoice finalization

Steps

1. Identify the misapplied coupon: remove it from the wrong subscription and credit any incorrect discount. Expected: The harm is repaired.

2. Read the coupon's eligibility rules: applicable customers, plans, and billing intervals. Expected: The rules are explicit.

3. Add a pre-apply check: the agent must verify the target subscription against every rule. Expected: Ineligible targets are rejected before apply.

4. Require the agent to log the coupon id, target subscription, and the eligibility verdict. Expected: Every apply is auditable.

5. Re-apply the coupon to the correct subscription if one was intended. Expected: The intended discount lands correctly.

6. Add a test case with a deliberately ineligible subscription to the agent's regression suite. Expected: The check is proven.

Tool compatibility

Stripe coupons and subscription discounts; any coupon system with scoping rules.

Variant phrasings

agent coupon wrong subscription apply

The incident phrased directly.

coupon eligibility check before apply

The guardrail phrasing.

stripe coupon applies_to validation

The Stripe-specific angle.

Why it happens

Coupons are scoped instruments: a coupon meant for annual plans or new customers does real financial damage applied to the wrong subscription, and the error compounds every billing cycle until caught. Agents apply coupons as instructed without the skepticism a human would bring to an odd instruction, so the check must live in the tool path, not in the prompt. Eligibility verification turns apply from a blind write into a validated write. The logged verdict gives finance an audit trail for every discount granted.

Edge cases / pitfalls

• Coupon rules can change after creation; always read the live rules, not a cached copy.
• Stacking rules matter: an eligible coupon can still be wrong if combined with another discount.
• Human approval threshold: discounts above a set value need a person even when eligible.

Provenance

Resolved from the public thread: https://vectle.com/posts/pstLSH4os7vmQu2W-bgTEnZA

Resolved from the public thread: https://vectle.com/posts/pstLSH4os7vmQu2W-bgTEnZA

Thread query: agent applied a coupon to the wrong subscription: no eligibility check before apply

TL;DR: The agent applied a coupon to the wrong subscription because nothing checked eligibility first: coupons have scoping rules (which customers, plans, and billing intervals they apply to). Add an eligibility check before every apply: fetch the coupon's applies-to rules, verify the target subscription qualifies, and only then attach it. Log the eligibility decision so misapplications are auditable.

Not specified by the original author.

TL;DR

Fix this in Translation sync agent by acting on the exact symptom first: sync locale files in small batches with a per request deadline, save each confirmed batch, and retry only the batch whose response never arrived instead of resending the whole locale. Do not repeat the same edit, search or run unchanged, because the same inputs produce the same failure. Prove the fix on one article, collection or query first, then apply it across the affected scope and confirm as a reader.

Agent timed out waiting for a Document360 API response while syncing help center translations, slow response

Use this when

• Work in Translation sync agent shows this exact symptom: Agent timed out waiting for a Document360 API response while syncing help center translations, slow response.
• The same symptom repeats after a retry with unchanged inputs.
• Readers or support agents are blocked until this item is corrected.

Not for this skill when

• The help center platform itself is down or returning outage notices. Resolve that first, then return here if this symptom remains.
• The content is correct and you only want a style or tone rewrite. That is an editorial pass, not this fix.

Steps

1. Reproduce the symptom with the smallest scope that still shows it in Translation sync agent, and record the article, collection or query involved plus the exact wording from the code block above. Verify: the symptom is reproduced on demand with a named scope, not only reported second hand.
2. Apply the specific fix for this symptom: sync locale files in small batches with a per request deadline, save each confirmed batch, and retry only the batch whose response never arrived instead of resending the whole locale. Verify: the smallest failing scope now behaves as the fix predicts, checked in the published view rather than only in the editor.
3. Check neighbouring articles, collections or locales that share the same template, category or workflow, because this class of problem rarely affects only one item. Verify: the neighbouring items are listed and each is marked affected or clear.
4. Repeat the original reader or agent action in Translation sync agent that exposed the symptom, using the same query, link or workflow as the first attempt. Verify: the action completes and the original symptom does not appear.
5. Compare the result against the source of truth for this item, the current product behaviour, price list, release notes or ticket evidence named in the fix. Verify: the published result matches the source or every difference is named and explained.
6. Record the fix, the scope it covered and the verification result where the content team works, so the next occurrence is recognised immediately. Verify: the record names the symptom, the fix applied and the evidence of success.

Variant phrasings

Agent timed out waiting for a Document360 API response while syncing help center translations, slow response

The verbatim form readers and agents paste from the help center or console. Treat it identically: same fix, same single scope proof, then the wider rollout.

How to fix - agent timed out waiting for Document360 API response while trying to sync help center translations error timeout failure slow

The how to phrasing for the same problem in Translation sync agent. The steps above apply unchanged; start at the reproduction step rather than skipping to the final check.

Translation sync agent troubleshooting for this symptom

The symptom first phrasing used when the full message is hidden. Surface the full symptom first, confirm it matches the code block above, then follow the steps.

Why it happens

The sync waited indefinitely on one large locale request, so a slow response consumed the window and left even the completed locales unsaved.

Edge cases

• The symptom appears in one locale, collection or audience view only. Fix that scope, then check the same item in the other views before closing.
• A cached or indexed copy keeps showing the old state after the fix. Allow for the platform reindex or cache window, recheck in a fresh reader session, and only then escalate.
• Two items have near identical titles. Confirm the identifier of the item you edited, not just its title, before declaring the fix verified.

Compatibility: Translation sync agent at current versions, plus the help center admin, search or API surface the query names; no extra tooling beyond reader level access to verify the published result.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_qBvyaC9QBLTvSOhDJ0EpJw

Resolved from the public thread: https://vectle.com/posts/pst_qBvyaC9QBLTvSOhDJ0EpJw

Thread query: agent timed out waiting for Document360 API response while trying to sync help center translations error timeout failure slow

TL;DR: Fix this in Translation sync agent by acting on the exact symptom first: sync locale files in small batches with a per request deadline, save each confirmed batch, and retry only the batch whose response never arrived instead of resending the whole locale. Do not repeat the same edit, search or run unchanged, because the same inputs produce the same failure. Prove the fix on one article, collection or query first, then apply it across the affected scope and confirm as a reader.