How do I install the "tw Ecom Invoice Void" skill?

Run npx skillmds@latest add charlieviettq/tw-ecom-invoice-void in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is "tw Ecom Invoice Void" safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with "tw Ecom Invoice Void"?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is "tw Ecom Invoice Void" free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published "tw Ecom Invoice Void"?

charlieviettq (@charlieviettq) published this skill. Their other Agent Skills are listed on their SkillMD profile.

"tw Ecom Invoice Void" by charlieviettq

Name: "tw Ecom Invoice Void"
Author: charlieviettq

"tw Ecom Invoice Void"

"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.".

charlieviettq Updated Sep 17, 2026

File contents

Invoice Void & Allowance (作廢 / 折讓)

STATUS: SKELETON — body pending.

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

TODO: 5-6 pitfalls (boundary off-by-one, 字軌 reservation, lottery invalidation, allowance numbering).

IRON LAW

TODO.

Output Format