# Check if customer usage site summary information exists

Count usage quantities and cost grouped by site id

Endpoint: HEAD /customer-usage-site-summaries
Version: 1.43
Security: bearerAuth

## Query parameters:

  - `customerId` (string, required)
    Required filter by customer
    Example: "0"

  - `billRunId` (string)
    Filter by bill run - by default we return the open bill run summary information if this is omitted
    Example: "0"

  - `siteId` (string)
    Filter by site identifier
    Example: "0"

  - `siteName` (string)
    Filter by site name
    Example: "xyz | in:x,y | like:xyz"


## Response 200 fields

## Response 400 fields

## Response 401 fields

## Response 403 fields

## Response 404 fields