Greetings

Using the expense api i'm trying to create a new expense, according to the api docs there is nothing that has to do with receipts here

but when i send my post request i get response code 400, error code 33003, Receipt not attached error. i don't understand what receipts has to do with this, and i can't find any field where i can even attach a receipt or set it as empty..what can i do in this case?

my code looks like this

2. void createExpense()
3. {
4. data = Map();
5. data.put("date","2022-12-01");
6. data.put("currency_id","16367000000000097");
7. data.put("currency_code","USD");
8. itemsList=List();
9. itemsList.add({ "category_id": "16367000000000400",
10.             "amount": 207.65,
11. "description":"Necessary Purchase"});
12. data.put("line_items",itemsList);
14.   response = invokeUrl
15.  [
16. url : "https://expense.zoho.com/api/v1/expenses"
17.   type : POST
18.   parameters : data
19.   connection : "test_expense_connection"
20. detailed: true
21.  ];
22.  info response;
23. }

where can i go to delve deeper into these matters? i'm facing a lot of api specific errors, is there a special docs for such issues?

thanks