# Export Usage Detail API Documentation

## Endpoint
`POST /exportUsageDetail`

## Description
Exports customer spray usage details as an Excel file. Supports filtering by date range, billable status, and applicator users (by username/email).

## Request Parameters
- `from` (string, required): Start date (YYYY-MM-DD)
- `to` (string, required): End date (YYYY-MM-DD)
- `tz` (string, optional): Timezone (e.g., 'America/Chicago')
- `billable` (boolean, optional): Filter for billable customers
- `applicators` (array of strings, optional): List of applicator usernames/emails to filter jobs

## Example Request (JSON)
```
{
  "from": "2025-06-01",
  "to": "2025-07-01",
  "tz": "America/Chicago",
  "billable": true,
  "applicators": ["applicator1@email.com", "applicator2@email.com"]
}
```

## Response
- Excel file download containing filtered customer spray usage details.

## Notes
- If `applicators` is provided, only jobs performed by those applicator users will be included.
- The output includes job details and the applicator for each job.