# Rule set schema for large matches
<a name="match-ruleset-schema-large"></a>

The following schema documents all possible properties and allowed values for a rule set that is used to build matches of greater than 40 players. If the total of `maxPlayers` values for all teams in the rule set exceeds 40, then FlexMatch processes match requests that use this rule set under the large-match guidelines. 

```
{
    "name": "string",
    "ruleLanguageVersion": "1.0",
    "playerAttributes":[{ 
         "name": "string,
         "type": <"string", "number", "string_list", "string_number_map">,
         "default": "string"
    }],
    "algorithm": {
        "strategy": "balanced",
        "batchingPreference": <"largestPopulation", "fastestRegion">,
        "balancedAttribute": "string",
        "expansionAgeSelection": <"newest", "oldest">,
        "backfillPriority": <"normal", "low", "high">
    },
    "teams": [{
        "name": "string",
        "maxPlayers": number,
        "minPlayers": number,
        "quantity": integer
    }],
    "rules": [{
        "name": "string",
        "type": "latency",
        "description": "string",
        "maxLatency": number,
        "partyAggregation": <"avg", "min", "max">
    }, {
        "name": "string",
        "type": "batchDistance",
        "batchAttribute": "string",
        "maxDistance": number
    }],
    "expansions": [{
        "target": "string",
        "steps": [{
            "waitTimeSeconds": number,
            "value": number
        }, {
            "waitTimeSeconds": number,
            "value": number
        }]
    }]
}
```