# Transaction Management

{% content-ref url="transaction-management/query-dr" %}
[query-dr](https://docs.neox.vn/docs/v2/payment-gateway/transaction-management/query-dr)
{% endcontent-ref %}

{% content-ref url="transaction-management/ipn" %}
[ipn](https://docs.neox.vn/docs/v2/payment-gateway/transaction-management/ipn)
{% endcontent-ref %}

{% content-ref url="broken-reference" %}
[Broken link](https://docs.neox.vn/docs/v2/payment-gateway/broken-reference)
{% endcontent-ref %}

{% content-ref url="transaction-management/refund-on-portal" %}
[refund-on-portal](https://docs.neox.vn/docs/v2/payment-gateway/transaction-management/refund-on-portal)
{% endcontent-ref %}