---
document_id: agent.dataset.tmall.task.bybt_coverage
schema_version: 1
---

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# Subsidy indicator coverage / 百亿补贴标识覆盖

Inspect monthly atomic sales metrics grouped by the normalized subsidy indicator.

按归一化后的百亿补贴标识分组查看月度原子销售指标。

## Required inputs / 必要输入

- `time` — `user_required`; required: Analysis time range
  分析时间范围

## Steps / 步骤

1. `query_bybt_groups` · `query_metrics` — Group sales by subsidy status.
   按百亿补贴状态分组查询销售。
   - metrics: `gmv`, `units`
   - group_by: `has_bybt`
   - time: `${time}`

## Output requirements / 输出要求

- Show unknown explicitly and never interpret it as no.
  显式展示未知，绝不解释为否。

## Limitations / 限制

- Unknown values cannot support a subsidy participation comparison.
  未知值不能支持是否参加百亿补贴的比较。

## Stop conditions / 停止条件

- Stop before drawing a participation conclusion when only unknown is returned.
  仅返回未知时，停止输出参与结论。