wechatpay-product-coupon

微信支付商品券接入助手，提供券类型选型、API代码示例（Java/Go）、开发参数校验、接口报错排查和上线质量检查。Use when user mentions "商品券", "优惠券接入", "发券", "核销", "创建商品券", "商品券代码", "签名报错", "验签失败", "回调收不到", "Request-Id", "品牌直连", "服务商模式", or asks to "接入商品券", "生成发券代码", "排查接口报错", "检查签名逻辑".

Independent GitHub snapshot · Automated classification · Original documentation governs