Creditmemo when using discount and partial refund does not return the full amount

[CalvinMcGee]

Preconditions (*)

Version: 20.0.20

Steps to reproduce (*)

1. Create price cart rule
   
2. Enable a payment provider that has _canRefundInvoicePartial = true.
3. Place an order with payment provider and use the coupon code.
4. Fulfill the order so it has status complete
   
5. Create a creditmemo.

Expected result (*)

The whole paid amount should be returned.

Actual result (*)

Order lines does not correlate to grand total and there is a difference.

Paid amount in this case is SEK318, but Magento only wants to refund SEK255.50

[Hanmac]

@theroch this was one of our problems too, right?

[theroch]

@Hanmac yes, it belongs to ticket #5380 in our system:

Precondition:

• System -> Configuration -> Sales -> Tax -> Orders, Invoices, Credit Memos Display Settings -> Display of shipping amount: excl. Tax
• 10% discount

Without discount:

Shipping amount (base_shipping_amount)(Netto): 8,29 €
Total shipping costs (base_shipping_incl_tax)(Brutto): 9,87 €
Input field for refund shipping costs: 9,87 €

{
  "coupon_code": null,
  "base_discount_amount": 0.0000,
  "base_grand_total": 19.8700,
  "base_shipping_amount": 8.2900,
  "base_shipping_tax_amount": 1.5800,
  "base_subtotal": 8.4000,
  "base_tax_amount": 3.1800,
  "discount_amount": 0.0000,
  "grand_total": 19.8700,
  "shipping_amount": 8.2900,
  "shipping_tax_amount": 1.5800,
  "subtotal": 8.4000,
  "tax_amount": 3.1800,
  "base_shipping_discount_amount": 0.0000,
  "base_subtotal_incl_tax": 10.0000,
  "shipping_discount_amount": 0.0000,
  "subtotal_incl_tax": 10.0000,
  "hidden_tax_amount": 0.0000,
  "base_hidden_tax_amount": 0.0000,
  "shipping_hidden_tax_amount": 0.0000,
  "base_shipping_hidden_tax_amnt": 0.0000,
  "hidden_tax_invoiced": null,
  "base_hidden_tax_invoiced": null,
  "shipping_incl_tax": 9.8700,
  "base_shipping_incl_tax": 9.8700
}

$allowedAmount = $order->getShippingAmount() - $order>getShippingRefunded();
//$allowedAmount = 8.29€ - 0€;
$allowedTaxAmount = $order->getShippingTaxAmount() - $order->getShippingTaxRefunded();
//$allowedTaxAmount = 1.58€ - 0€;
$shippingInclTax = $allowedAmount + $allowedTaxAmount;
//9.87€ = 8.29€ + 1.58€

With discount:

Shipping amount (base_shipping_amount)(Netto): 8,29 €
Total shipping costs (base_shipping_incl_tax)(Brutto): 9,87 €
Input field for refund shipping costs: 9,73€ (Difference is 0.14€, due to hidden tax amount)

{
  "coupon_code": "N6KX5L497VK2",
  "base_discount_amount": -1.6700,
  "base_grand_total": 18.2000,
  "base_shipping_amount": 8.2900,
  "base_shipping_tax_amount": 1.4400,
  "base_subtotal": 8.4000,
  "base_tax_amount": 2.9000,
  "discount_amount": -1.6700,
  "grand_total": 18.2000,
  "shipping_amount": 8.2900,
  "shipping_tax_amount": 1.4400,
  "subtotal": 8.4000,
  "tax_amount": 2.9000,
  "base_shipping_discount_amount": 0.8290,
  "base_subtotal_incl_tax": 10.0000,
  "shipping_discount_amount": 0.8290,
  "subtotal_incl_tax": 10.0000,
  "hidden_tax_amount": 0.1400,
  "base_hidden_tax_amount": 0.1400,
  "shipping_hidden_tax_amount": 0.1400,
  "base_shipping_hidden_tax_amnt": 0.1400,
  "hidden_tax_invoiced": 0.28,
  "base_hidden_tax_invoiced": 0.28,
  "shipping_incl_tax": 9.8700,
  "base_shipping_incl_tax": 9.8700
}

$allowedAmount = $order->getShippingAmount() - $order>getShippingRefunded();
//$allowedAmount = 8.29€ - 0€;
$allowedTaxAmount = $order->getShippingTaxAmount() - $order->getShippingTaxRefunded();
//$allowedTaxAmount = 1.44€ - 0€;
$shippingInclTax = $allowedAmount + $allowedTaxAmount;
//9.73€ = 8.29€ + 1.44€

A temporary workaround could be:

• System -> Configuration -> Sales -> Tax -> Orders, Invoices, Credit Memos Display Settings -> Display of shipping amount: incl. Tax
  But you have to test it with your configuration.

@CalvinMcGee can give please a detailed description of your tax configuration?
We need the following configuration fields:

Is it possible to post the DB fields as in our example from sales_flat_order for the corresponding order?

[CalvinMcGee]

@theroch of course. Here it is:

[sreichel]

Think this is still present in M2.

Thanks for sharing config. Time to rfefactore all that.

[CalvinMcGee]

@theroch here is also the row from sales_flat_order in JSON format:

{
  "entity_id": 318337,
  "state": "complete",
  "status": "complete",
  "coupon_code": "JOACHIM",
  "protect_code": "4209c1",
  "shipping_description": "DB Schenker Ombud",
  "is_virtual": 0,
  "store_id": 4,
  "customer_id": null,
  "base_discount_amount": "-250.0000",
  "base_discount_canceled": null,
  "base_discount_invoiced": "-250.0000",
  "base_discount_refunded": null,
  "base_grand_total": "318.0000",
  "base_shipping_amount": "55.2000",
  "base_shipping_canceled": null,
  "base_shipping_invoiced": "55.2000",
  "base_shipping_refunded": null,
  "base_shipping_tax_amount": "13.8000",
  "base_shipping_tax_refunded": null,
  "base_subtotal": "399.2000",
  "base_subtotal_canceled": null,
  "base_subtotal_invoiced": "399.2000",
  "base_subtotal_refunded": null,
  "base_tax_amount": "63.6000",
  "base_tax_canceled": null,
  "base_tax_invoiced": "63.6000",
  "base_tax_refunded": null,
  "base_to_global_rate": "1.0000",
  "base_to_order_rate": "1.0000",
  "base_total_canceled": null,
  "base_total_invoiced": "318.0000",
  "base_total_invoiced_cost": "0.0000",
  "base_total_offline_refunded": null,
  "base_total_online_refunded": null,
  "base_total_paid": "318.0000",
  "base_total_qty_ordered": null,
  "base_total_refunded": null,
  "discount_amount": "-250.0000",
  "discount_canceled": null,
  "discount_invoiced": "-250.0000",
  "discount_refunded": null,
  "grand_total": "318.0000",
  "shipping_amount": "55.2000",
  "shipping_canceled": null,
  "shipping_invoiced": "55.2000",
  "shipping_refunded": null,
  "shipping_tax_amount": "13.8000",
  "shipping_tax_refunded": null,
  "store_to_base_rate": "1.0000",
  "store_to_order_rate": "1.0000",
  "subtotal": "399.2000",
  "subtotal_canceled": null,
  "subtotal_invoiced": "399.2000",
  "subtotal_refunded": null,
  "tax_amount": "63.6000",
  "tax_canceled": null,
  "tax_invoiced": "63.6000",
  "tax_refunded": null,
  "total_canceled": null,
  "total_invoiced": "318.0000",
  "total_offline_refunded": null,
  "total_online_refunded": null,
  "total_paid": "318.0000",
  "total_qty_ordered": "1.0000",
  "total_refunded": null,
  "can_ship_partially": null,
  "can_ship_partially_item": null,
  "customer_is_guest": 0,
  "customer_note_notify": 0,
  "billing_address_id": 577988,
  "customer_group_id": 0,
  "edit_increment": null,
  "email_sent": 1,
  "forced_shipment_with_invoice": null,
  "payment_auth_expiration": null,
  "quote_address_id": null,
  "quote_id": 780686,
  "shipping_address_id": 577989,
  "adjustment_negative": null,
  "adjustment_positive": null,
  "base_adjustment_negative": null,
  "base_adjustment_positive": null,
  "base_shipping_discount_amount": "0.0000",
  "base_subtotal_incl_tax": "499.0000",
  "base_total_due": "0.0000",
  "payment_authorization_amount": null,
  "shipping_discount_amount": "0.0000",
  "subtotal_incl_tax": "499.0000",
  "total_due": "0.0000",
  "weight": "5.0000",
  "customer_dob": null,
  "increment_id": "T-554883",
  "applied_rule_ids": "1760",
  "base_currency_code": "SEK",
  "customer_email": "john.doe@example.com",
  "customer_firstname": null,
  "customer_lastname": null,
  "customer_middlename": null,
  "customer_prefix": null,
  "customer_suffix": null,
  "customer_taxvat": null,
  "discount_description": "JOACHIM",
  "ext_customer_id": null,
  "ext_order_id": null,
  "global_currency_code": "SEK",
  "hold_before_state": null,
  "hold_before_status": null,
  "order_currency_code": "SEK",
  "original_increment_id": null,
  "relation_child_id": null,
  "relation_child_real_id": null,
  "relation_parent_id": null,
  "relation_parent_real_id": null,
  "remote_ip": "10.30.0.11",
  "shipping_method": "tablerate_bestway",
  "store_currency_code": "SEK",
  "store_name": "[REDACTED]",
  "x_forwarded_for": "[REDACTED]",
  "customer_note": null,
  "created_at": "2024-11-28 13:28:45",
  "updated_at": "2024-11-28 13:29:44",
  "total_item_count": 1,
  "customer_gender": null,
  "hidden_tax_amount": "50.0000",
  "base_hidden_tax_amount": "50.0000",
  "shipping_hidden_tax_amount": "0.0000",
  "base_shipping_hidden_tax_amnt": "0.0000",
  "hidden_tax_invoiced": "50.0000",
  "base_hidden_tax_invoiced": "50.0000",
  "hidden_tax_refunded": null,
  "base_hidden_tax_refunded": null,
  "shipping_incl_tax": "69.0000",
  "base_shipping_incl_tax": "69.0000",
  "coupon_rule_name": "Joachim 250 SEK",
  "paypal_ipn_customer_notified": 0,
  "gift_message_id": null,
  "payment_fee_amount": "0.00",
  "payment_fee_amount_invoiced": "0.00",
  "payment_fee_amount_refunded": "0.00",
  "payment_fee_tax_amount": "0.00",
  "base_payment_fee_amount": "0.00",
  "base_payment_fee_amount_invoiced": "0.00",
  "base_payment_fee_amount_refunded": "0.00",
  "base_payment_fee_tax_amount": "0.00",
  "payment_fee_title": null,
  "ebizmarts_abandonedcart_flag": null,
  "ebizmarts_magemonkey_campaign_id": null,
  "mailchimp_campaign_id": null,
  "mailchimp_abandonedcart_flag": 0,
  "mailchimp_landing_page": "",
  "base_retain24_amount": "0.00",
  "base_retain24_amount_invoiced": "0.00",
  "base_retain24_amount_refunded": "0.00",
  "retain24_amount": "0.00",
  "retain24_amount_invoiced": "0.00",
  "retain24_amount_refunded": "0.00",
  "retain24_code": null,
  "retain24_reservation_reference_id": null,
  "retain24_pin": null,
  "external_order_api_reference": null,
  "external_order_api_unique_id": null
}

I did try to temporarily switch to Include tax in System -> Configuration -> Sales -> Tax -> Orders, Invoices, Credit Memos Display Settings -> Display of shipping amount, but nothing happened as far as I could see.

Here's our current config:

[Piralein]

The description about changing the display settings is about the shipping cost and its discount.

Konfiguration:

Coupon Settings:

Calculation Settings:

Order (Exclude Tax Display):

Orders, Invoices, Credit Memos Display Settings (All Excluding Tax):

Create Creditmemo:
(Both screenshots are taken with exclude-tax display)

It displays a different total.
13,69€ instead of 13,41€

Final Overview:

Calculated the refund correctly

Orders, Invoices, Credit Memos Display Settings (All Including Tax):

Create Creditmemo:
(Both screenshots are taken with include-tax display)

It displays a different total and the shipping amount of 3€ is refunded with 2.98 (default)

Final Overview:

0.04€ are missing.

Creditmemo Comparison:

Exclude-Tax Creditmemo:
(Both screenshots are taken with include-tax display)

Include-Tax Creditmemo:

The coupon and shipping amount is different. resulting in 0.04€ less refunded