Returns the name, Amazon Resource Name (ARN), <code>NumberOfRules</code> and effective dates of all Cost Categories defined in the account. You have the option to use <code>EffectiveOn</code> to return a list of Cost Categories that were active on a specific date. If there is no <code>EffectiveOn</code> specified, you’ll see Cost Categories that are effective on the current date. If Cost Category is still effective, <code>EffectiveEnd</code> is omitted in the response. <code>ListCostCategoryDefinitions</code> supports pagination. The request can have a <code>MaxResults</code> range up to 100.

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}