Bundle Product discounts not saved to quote_item table

[hcmlopes]

Preconditions (*)

1. Magento 2.4.3-p1

Steps to reproduce (*)

1. Create Cart Price Rule for 10%
2. Add Bundle Product to cart
3. Check column row_total_with_discount, discount_amount, base_discount_amount, discount_percent in database table quote_item
4. Check API /rest/<STORE_CODE>/V1/guest-carts/<CART_ID>/totals

Expected result (*)

1. The fields are being calculated properly and stored in the database and therefore are properly returned via API

Actual result (*)

Additional Info (*)

1. Database shows rule 14 should be applied which in this case applies 10%. This can be seen in the checkout where the discount does apply as expected.
   
2. Partially related issue row_total_with_discount not calculated #34288

---

Severity assessment

• Severity: S1 - Affects critical data or functionality and forces users to employ a workaround.

[m2-assistant]

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[m2-assistant]

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[engcom-Delta]

Hi @hcmlopes,
Thank you for raising an issue .We tried to reproduce the issue on magento 2.4 Develop but we could not find out the endpoint , we have referred dev doc # [https://devdocs.magento.com/guides/v2.4/rest/tutorials/orders/order-add-items.html
unfortunately it was not available . Please help us to replicate the issue.

Thanks

[hcmlopes]

@magento give me 2.4-develop instance

[magento-deployment-service]

Hi @hcmlopes. Thank you for your request. I'm working on Magento instance for you.

[magento-deployment-service]

Hi @hcmlopes, here is your Magento Instance: https://c2763fc9e3b23a6bcf3d4f868db935f6.instances.magento-community.engineering
Admin access: https://c2763fc9e3b23a6bcf3d4f868db935f6.instances.magento-community.engineering/admin_50fe
Login: bf6dddc3
Password: 1112041f1864

[hcmlopes]

@engcom-Delta
Steps to reproduce

1. Request Magento instance
2. Generate a new guest cart by making a POST request to /rest/default/V1/guest-carts
3. Use Cart ID received and make POST request to /rest/default/V1/guest-carts/:cartId/items

Payload

{
  "cartItem": {
    "sku": "WS12-M-Orange",
    "qty": 1,
    "quote_id": "{{cartId}}"
  }
}

4. Use Cart ID received and make POST request to /rest/default/V1/guest-carts/:cartId/items

Payload

Make sure to replace {{cartId}} with the cart ID received from Step 2

{
  "cartItem": {
    "sku": "24-WG080",
    "qty": 4,
    "quote_id": "{{cartId}}",
    "product_option": {
      "extension_attributes": {
        "bundle_options": [
          {
            "option_id": 1,
            "option_qty": 1,
            "option_selections": [2]
          },
          {
            "option_id": 2,
            "option_qty": 1,
            "option_selections": [4]
          },
          {
            "option_id": 3,
            "option_qty": 1,
            "option_selections": [6]
          },
          {
            "option_id": 4,
            "option_qty": 1,
            "option_selections": [8]
          }
        ]
      }
    }
  }
}

6. Make GET request to /rest/default/V1/guest-carts/:cartId/totals
   Result

{
    "grand_total": 198.4,
    "base_grand_total": 198.4,
    "subtotal": 316,
    "base_subtotal": 316,
    "discount_amount": -117.6,
    "base_discount_amount": -117.6,
    "subtotal_with_discount": 198.4,
    "base_subtotal_with_discount": 198.4,
    "shipping_amount": 0,
    "base_shipping_amount": 0,
    "shipping_discount_amount": 0,
    "base_shipping_discount_amount": 0,
    "tax_amount": 0,
    "base_tax_amount": 0,
    "weee_tax_applied_amount": null,
    "shipping_tax_amount": 0,
    "base_shipping_tax_amount": 0,
    "subtotal_incl_tax": 316,
    "shipping_incl_tax": 0,
    "base_shipping_incl_tax": 0,
    "base_currency_code": "USD",
    "quote_currency_code": "USD",
    "items_qty": 6,
    "items": [
        {
            "item_id": 10,
            "price": 68,
            "base_price": 68,
            "qty": 4,
            "row_total": 272,
            "base_row_total": 272,
            "row_total_with_discount": 0,
            "tax_amount": 0,
            "base_tax_amount": 0,
            "discount_amount": 0,
            "base_discount_amount": 0,
            "discount_percent": 0,
            "price_incl_tax": 68,
            "base_price_incl_tax": 68,
            "row_total_incl_tax": 272,
            "base_row_total_incl_tax": 272,
            "options": "[{\"value\":\"1 x Sprite Stasis Ball 65 cm <span class=\\\"price\\\">$27.00<\\/span>\",\"label\":\"Sprite Stasis Ball\"},{\"value\":\"1 x Sprite Foam Yoga Brick <span class=\\\"price\\\">$5.00<\\/span>\",\"label\":\"Sprite Foam Yoga Brick\"},{\"value\":\"1 x Sprite Yoga Strap 8 foot <span class=\\\"price\\\">$17.00<\\/span>\",\"label\":\"Sprite Yoga Strap\"},{\"value\":\"1 x Sprite Foam Roller <span class=\\\"price\\\">$19.00<\\/span>\",\"label\":\"Sprite Foam Roller\"}]",
            "weee_tax_applied_amount": null,
            "weee_tax_applied": null,
            "name": "Sprite Yoga Companion Kit"
        },
        {
            "item_id": 15,
            "price": 22,
            "base_price": 22,
            "qty": 2,
            "row_total": 44,
            "base_row_total": 44,
            "row_total_with_discount": 0,
            "tax_amount": 0,
            "base_tax_amount": 0,
            "tax_percent": 0,
            "discount_amount": 8.8,
            "base_discount_amount": 8.8,
            "discount_percent": 20,
            "price_incl_tax": 22,
            "base_price_incl_tax": 22,
            "row_total_incl_tax": 44,
            "base_row_total_incl_tax": 44,
            "options": "[]",
            "weee_tax_applied_amount": null,
            "weee_tax_applied": null,
            "name": "Radiant Tee-M-Orange"
        }
    ],
    "total_segments": [
        {
            "code": "subtotal",
            "title": "Subtotal",
            "value": 316
        },
        {
            "code": "discount",
            "title": "Discount",
            "value": -117.6
        },
        {
            "code": "shipping",
            "title": "Shipping & Handling",
            "value": 0
        },
        {
            "code": "tax",
            "title": "Tax",
            "value": 0,
            "extension_attributes": {
                "tax_grandtotal_details": []
            }
        },
        {
            "code": "grand_total",
            "title": "Grand Total",
            "value": 198.4,
            "area": "footer"
        }
    ]
}

Expected result

Both items should have their respective discount information. As you can see the bundle product, item_id: 10 in the example, does not have discount_amount, base_discount_amount, percecnt_discount, row_total_with_discount which would be used to properly display line item rows

[engcom-Delta]

Hi @hcmlopes ,

Thanks for providing detailed steps to replicate , after following the steps issue is reproducible.
We found that discount_amount, base_discount_amount, percecnt_discount, row_total_with_discount values are missing Hence issue has been confirmed.

Results: