shopify - Is there a way to filter out purchases where transaction ID is (not set)?

I'm working in a GA4 account for someone using a shopify store and am trying to filter out purchases that don't have IDs (i.e. transaction ID is (not set)) from being sent to analytics/counted as revenue, and am wondering if there's a way to do that with liquid in the checkout page. Here's the purchase event as is:

window.dataLayer = window.dataLayer || [];
dataLayer.push({ ecommerce: null });
{% if first_time_accessed %}
dataLayer.push({
  event: "purchase",
  ecommerce: {
      transaction_id: "{{ order.order_number }}",
      value: {{ total_price | times: 0.01 }},
      tax: {{ tax_price | times: 0.01 }},
      shipping: {{ shipping_price | times: 0.01 }},
      currency: "{{ order.currency }}",
      items: [
       {% for line_item in line_items %}{
        item_id: "{{ line_item.product_id }}",
        item_name: "{{ line_item.title | remove: "'" | remove: '"' }}",
        currency: "{{ order.currency }}",
        price: {{ line_item.final_price | times: 0.01 }},
        quantity: {{ line_item.quantity }}
      },{% endfor %}
 ]
  }
});
{% endif %}
Copy code

Thanks for any guidance!

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