Invoice Void & Allowance (作廢 / 折讓) 台灣電商：Invoice Void & Allowance (作廢 / 折讓)
Coming Soon即將推出Void Taiwan e-invoices within the same bimonthly window, or issue allowances (折讓) for cross-period corrections. Use when handling returns / refunds that affect invoice state. Do NOT use for initial issuance — see the 加值中心-specific skills. STATUS: SKELETON — body pending.
台灣電商技能：Invoice Void & Allowance (作廢 / 折讓) 分析與應用。
When to use this skill
- A return / refund occurs within same bimonthly → void
- A return / refund crosses bimonthly boundary → 折讓
- Debugging invoice state inconsistency post-refund
- Building void / allowance SOP
Do NOT use when
- Initial issuance → issuance-layer skill
- Tax filing impact →
tw-tax-basics
Core concepts
TODO: void vs 折讓, bimonthly boundary, accounting implications.
NOTE (填充時): 此 skill 只寫「選哪條路」的決策邏輯，不重複 API 呼叫細節。
tw-ecom-invoice-ezpay 已有完整的 void_invoice / issue_allowance / trigger_allowance 步驟；
tw-ecom-invoice-universalec 同理。此 skill 的 Implementation guidance 應只提供判斷框架，
並用 "→ see tw-ecom-invoice-ezpay / -universalec" 指向 API 層。
Decision tree
TODO: given refund date vs issuance date → void or 折讓.
Implementation guidance
TODO: 決策路徑後的 SOP（accounting entries, customer notification, 字軌影響）。 不重複 void_invoice / issue_allowance / trigger_allowance 的 API 參數 — 那些在 ezpay/universalec skill。
Gotchas注意事項
TODO: 5-6 pitfalls (boundary off-by-one, 字軌 reservation, lottery invalidation, allowance numbering).
IRON LAW
TODO.
Output Format輸出格式
TODO.
Related
tw-ecom-invoice-ezpaytw-ecom-payment-dispute
Last verified: 2026-04