How can I correctly delete a product from an invoice using Fakturownia API? (Jak poprawnie usunąć produkt z faktury korzystając z API Fakturownia?)

ere are the details: 1. **Creating an Invoice**: ```sh curl -X POST https://xxx.fakturownia.pl/invoices.json \ -H 'Accept: application/json' \ -H 'Content-Type: application/json' \ -d '{ "api_token": "QQQ", "invoice": { "kind": "receipt", "lang": "pl", "number": null, "seller_name": "My firma", "show_discount": 1, "positions": [ { "name": "price2", "tax": 20.00000, "total_price_gross": 2000.00, "quantity": 2.0, "discount_percent": 1.0, "discount": 20.0000, "quantity_unit": "szt" }, { "name": "percent2", "tax": 20.00000, "total_price_gross": 2000.00, "quantity": 2.0, "discount_percent": 10.0, "discount": 200.0000, "quantity_unit": "szt" } ], "buyer_company": 0, "buyer_last_name": "0664324794", "buyer_first_name": "0664324794" } }' Updating an Invoice (changing product names): curl -X PUT https://xxx.fakturownia.pl/invoices/304979117.json \ -H 'Accept: application/json' \ -H 'Content-Type: application/json' \ -d '{ "api_token": "QQQ", "invoice": { "kind": "receipt", "lang": "pl", "seller_name": "My firma", "show_discount": 1, "positions": [ { "id": 720511219, "name": "price3", "tax": 20.00000, "total_price_gross": 2000.00, "quantity": 2.0, "discount_percent": 1.0, "discount": 20.0000, "quantity_unit": "szt" }, { "id": 720511220, "name": "percent3", "tax": 20.00000, "total_price_gross": 2000.00, "quantity": 2.0, "discount_percent": 10.0, "discount": 200.0000, "quantity_unit": "szt" } ], "buyer_company": 0, "buyer_last_name": "0664324794", "buyer_first_name": "0664324794" } }' Issue: I need to delete a product from the invoice. I tried using the deleted field in the PUT request, but it did not work. Attempt to Delete a Product: curl -X PUT https://xxx.fakturownia.pl/invoices/304979117.json \ -H 'Accept: application/json' \ -H 'Content-Type: application/json' \ -d '{ "api_token": "QQQ", "invoice": { "kind": "receipt", "lang": "pl", "seller_name": "My firma", "show_discount": 1, "positions": [ { "id": 720511219, "name": "price3", "tax": 20.00000, "total_price_gross": 2000.00, "quantity": 2.0, "discount_percent": 1.0, "discount": 20.0000, "quantity_unit": "szt" }, { "id": 720511220, "deleted": true } ], "buyer_company": 0, "buyer_last_name": "0664324794", "buyer_first_name": "0664324794" } }' Question: How can I correctly delete a product from an invoice using Fakturownia API? Is there a specific field or method I should use? Any advice or examples would be greatly appreciated. Pytanie: Jak mogę poprawnie usunąć produkt z faktury za pomocą Fakturownia API? Czy jest jakieś konkretne pole lub metoda, której powinienem użyć? Wszelkie porady lub przykłady byłyby mile widziane.