> ## Documentation Index
> Fetch the complete documentation index at: https://api-reference.hyperswitch.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Merchant Debit Routing Flag

> Curl examples for reading and updating the merchant debit-routing feature flag.

# Merchant Debit Routing Flag

Debit/network routing is gated per merchant. Missing config defaults to disabled. Enable this flag before calling `/decide-gateway` with `NTW_BASED_ROUTING` or `NTW_SR_HYBRID_ROUTING`.

## Read Flag

```bash theme={null}
curl "$BASE_URL/merchant-account/merchant_demo/debit-routing" \
  --header "$AUTH_HEADER"
```

```json theme={null}
{
  "merchant_id": "merchant_demo",
  "debit_routing_enabled": false
}
```

## Enable Flag

```bash theme={null}
curl --location "$BASE_URL/merchant-account/merchant_demo/debit-routing" \
  --header "$AUTH_HEADER" \
  --header "Content-Type: application/json" \
  --data '{ "enabled": true }'
```

```json theme={null}
{
  "merchant_id": "merchant_demo",
  "debit_routing_enabled": true
}
```

## Disable Flag

```bash theme={null}
curl --location "$BASE_URL/merchant-account/merchant_demo/debit-routing" \
  --header "$AUTH_HEADER" \
  --header "Content-Type: application/json" \
  --data '{ "enabled": false }'
```

## Run Debit Routing Transaction

After enabling the flag, send a debit card transaction through `/decide-gateway`. The debit router expects `paymentInfo.metadata` to be a JSON string containing `merchant_category_code`, `acquirer_country`, and `co_badged_card_data`.

```bash theme={null}
curl --location "$BASE_URL/decide-gateway" \
  --header "$AUTH_HEADER" \
  --header "Content-Type: application/json" \
  --data '{
    "merchantId": "merchant_demo",
    "eligibleGatewayList": ["stripe", "adyen"],
    "rankingAlgorithm": "NTW_BASED_ROUTING",
    "paymentInfo": {
      "paymentId": "debit_001",
      "amount": 1000,
      "currency": "USD",
      "country": "US",
      "paymentType": "ORDER_PAYMENT",
      "paymentMethodType": "CARD",
      "paymentMethod": "DEBIT",
      "authType": "THREE_DS",
      "metadata": "{\"merchant_category_code\":\"merchant_category_code_0001\",\"acquirer_country\":\"US\",\"co_badged_card_data\":{\"card_type\":\"debit\",\"issuer_country\":\"US\",\"is_regulated\":false,\"regulated_name\":null,\"card_networks\":[\"VISA\",\"NYCE\",\"PULSE\",\"STAR\"]}}"
    }
  }'
```

```json theme={null}
{
  "decided_gateway": "stripe",
  "routing_approach": "NTW_BASED_ROUTING",
  "debit_routing_output": {
    "co_badged_card_networks_info": [
      { "network": "NYCE", "saving_percentage": 1.2 },
      { "network": "PULSE", "saving_percentage": 0.8 }
    ],
    "issuer_country": "US",
    "is_regulated": false,
    "card_type": "debit"
  }
}
```

## Notes

* Use backend enum strings: `NTW_BASED_ROUTING` and `NTW_SR_HYBRID_ROUTING`.
* `co_badged_card_data.card_type` must be lowercase `debit` or `credit` inside metadata.
* If the flag is disabled, debit-routing transactions should fail with a debit-routing-not-enabled error.

## Related

* [Debit Gateway Transaction](/decision-engine-api-reference/api-reference/guides/run-transactions/decide-gateway-debit-routing)
* [Network + SR Hybrid Routing](/decision-engine-api-reference/api-reference/guides/run-transactions/decide-gateway-hybrid-routing)
* [Payment Audit](/decision-engine-api-reference/api-reference/guides/analytics-audit/analytics-endpoints)