My F# code cannot read XML using XSD template - f#

Question

I want to parse data from my bank account in F# that are provided in XML. I have an XSD schema of a statement.
My code reads the schema but it is not able to read the structure. I see the content in XML in data.XElement, however, data.AccountStatement property does not exist. The code goes to None option and then the application crashes. Do you have any idea why the code loads the schema but cannot work with data in XML?
open FSharp.Data
let TestAddress = "TESTADDRESS"
let dateRegex = #"\d{1,2}[.]\d{1,2}[.]\d{4}";
type BankTransactionList = XmlProvider<Schema="Schemas/IBSchema.xsd">
let data = BankTransactionList.Parse(Http.RequestString(TestAddress))
[<EntryPoint>]
let main argv =
let AccountStatement =
match data.AccountStatement with
| Some v -> Some v
| None -> None //code goes here
let TransactionList =
match AccountStatement.Value.TransactionList with //and crashes here
| Some v -> Some v
| None -> None
for transaction in TransactionList.Value.Transactions do
printf "%s" transaction.Column22.Value
0 // return an integer exit code
I am developing in .Net Core 2.1. You can see the anonymized example of XML data below.
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<AccountStatement>
<Info>
<accountId>X</accountId>
<bankId>X</bankId>
<currency>CZK</currency>
<iban>X</iban>
<bic>X</bic>
<openingBalance>X</openingBalance>
<closingBalance>X</closingBalance>
<dateStart>X</dateStart>
<dateEnd>X</dateEnd>
<idFrom>X</idFrom>
<idTo>16663326563</idTo>
</Info>
<TransactionList>
<Transaction>
<column_22 name="ID pohybu" id="22">0</column_22>
<column_0 name="Datum" id="0">2018-08-25+02:00</column_0>
<column_1 name="Objem" id="1">0</column_1>
<column_14 name="Měna" id="14">CZK</column_14>
<column_5 name="VS" id="5">1023</column_5>
<column_16 name="Zpráva pro příjemce" id="16">Message</column_16>
<column_8 name="Typ" id="8">Platba kartou</column_8>
<column_9 name="Provedl" id="9">Pešík, Jiří</column_9>
<column_17 name="ID pokynu" id="17">0</column_17>
</Transaction>
</TransactionList>
</AccountStatement>

Answer 1

I think the issue is that the schema requires the namespace: "http://www.fio.cz/IBSchema".
Adding the namespace in the document should solve the issue:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<AccountStatement xmlns="http://www.fio.cz/IBSchema">
<Info>
<accountId>X</accountId>
<bankId>X</bankId>
<currency>CZK</currency>
<iban>X</iban>
<bic>X</bic>
<openingBalance>0</openingBalance>
<closingBalance>0</closingBalance>
<dateStart>2000-01-01</dateStart>
<dateEnd>2001-01-01</dateEnd>
<idFrom>0</idFrom>
<idTo>16663326563</idTo>
</Info>
<TransactionList>
<Transaction>
<column_22 name="ID pohybu" id="22">0</column_22>
<column_0 name="Datum" id="0">2018-08-25+02:00</column_0>
<column_1 name="Objem" id="1">0</column_1>
<column_14 name="Měna" id="14">CZK</column_14>
<column_5 name="VS" id="5">1023</column_5>
<column_16 name="Zpráva pro příjemce" id="16">Message</column_16>
<column_8 name="Typ" id="8">Platba kartou</column_8>
<column_9 name="Provedl" id="9">Pešík, Jiří</column_9>
<column_17 name="ID pokynu" id="17">0</column_17>
</Transaction>
</TransactionList>
</AccountStatement>
I hope your bank is not producing documents lacking the namespace and a schema requiring it.