C# CS7036 error on SOAP API script saying that it can't find a string I'm passing

Question

I'm a relatively inexperienced C# developer, mostly using C# for scripting tasks SSIS packages. I'm currently working on a script task for a SOAP API process to update information on external site. Most of the code is autogenerated using a WSDL file from the external site, Visual Studio 2022 and Nuget. I just need to plug in my data and use the autogenerated code, but on a build I am getting a CS7036 error on the 2nd parameter w3cReconcialationDate for threading task updatePaymentStatusAsync.

I've searched the internet about this error, and most answers say that the correct number of parameters are not being passed. I've triple checked, and I'm passing all the correct parameters in the correct order, so I don't know what's going on.

To debug, I tried commenting out all mention of the parameter w3ReconciliationDate and building my code. The same error cropped up on the NEXT string parameter Action.

Here is the autogenerated code for the threading task:

public System.Threading.Tasks.Task<XML_Rootobject.updatePaymentStatusResponse> updatePaymentStatusAsync(XML_Rootobject.paymentStatusSearchCriteria criteria, string w3cReconciliationDate, string action, XML_Rootobject.additionalPaymentInformation additionalPaymentInformation, XML_Rootobject.auditLogInfo auditLogInfo)
{
    XML_Rootobject.updatePaymentStatusRequest inValue = new XML_Rootobject.updatePaymentStatusRequest();
    inValue.criteria = criteria;
    inValue.w3cReconciliationDate = w3cReconciliationDate;
    inValue.action = action;
    inValue.additionalPaymentInformation = additionalPaymentInformation;
    inValue.auditLogInfo = auditLogInfo;
    return ((XML_Rootobject.PaymentServiceStronglyTypedType)(this)).updatePaymentStatusAsync(inValue);
}

Here is the autogenerated class I am referenced by the previous threading task:

public partial class updatePaymentStatusRequest
{
    [System.ServiceModel.MessageBodyMemberAttribute(Namespace = "http://foobar.com", Order = 0)]
    [System.Xml.Serialization.XmlElementAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified)]
    public XML_Rootobject.paymentStatusSearchCriteria criteria;
 
    [System.ServiceModel.MessageBodyMemberAttribute(Namespace = "http://foobar.com", Order = 1)]
    [System.Xml.Serialization.XmlElementAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified)]
    public string w3cReconciliationDate;
 
    [System.ServiceModel.MessageBodyMemberAttribute(Namespace = "http://foobar.com", Order = 2)]
    [System.Xml.Serialization.XmlElementAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified)]
    public string action;
 
    [System.ServiceModel.MessageBodyMemberAttribute(Namespace = "http://foobar.com", Order = 3)]
    [System.Xml.Serialization.XmlElementAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified)]
    public XML_Rootobject.additionalPaymentInformation additionalPaymentInformation;
 
    [System.ServiceModel.MessageBodyMemberAttribute(Namespace = "http://foobar.com", Order = 4)]
    [System.Xml.Serialization.XmlElementAttribute(Form = System.Xml.Schema.XmlSchemaForm.Unqualified)]
    public XML_Rootobject.auditLogInfo auditLogInfo;
 
    public updatePaymentStatusRequest()
    {
    }
 
    public updatePaymentStatusRequest(XML_Rootobject.paymentStatusSearchCriteria criteria, string w3cReconciliationDate, string action, XML_Rootobject.additionalPaymentInformation additionalPaymentInformation, XML_Rootobject.auditLogInfo auditLogInfo)
    {
        this.criteria = criteria;
        this.w3cReconciliationDate = w3cReconciliationDate;
        this.action = action;
        this.additionalPaymentInformation = additionalPaymentInformation;
        this.auditLogInfo = auditLogInfo;
    }
}

And this is the code I'm developing to use the class and reference the parameters:

XML_Rootobject.updatePaymentStatusRequest updPayStReq = new XML_Rootobject.updatePaymentStatusRequest
{
    criteria = ps_criteria, // previously defined object
    w3cReconciliationDate = DateTime.Now.ToString("yyyy'-'MM'-'dd'T'HH':'mm':'ss"),
    action = "Amend",
    additionalPaymentInformation = addlPaymInfo, // previously defined object
    auditLogInfo = auditLogInf // previously defined object
};

XML_Rootobject.updatePaymentStatusResponse updPayStResp = await HRP_API(updPayStReq);

And finally here is the task that is generating the error:

public static Task<XML_Rootobject.updatePaymentStatusResponse> HRP_API(XML_Rootobject.updatePaymentStatusRequest spType)
{
    ... 
    // Invoke client
    XML_Rootobject.updatedPaymentInformation SP_Resp = new XML_Rootobject.updatedPaymentInformation();
    XML_Rootobject.updatePaymentStatusResponse SubmitResponse = new XML_Rootobject.updatePaymentStatusResponse();
 
    return SubmitResponse = PI_SClient.updatePaymentStatusAsync(spType).GetAwaiter().GetResult();
}

This is the actual error message:

Error CS7036 There is no argument given that corresponds to the required formal parameter 'w3cReconciliationDate' of 'ScriptMain.XML_Rootobject.PaymentServiceStronglyTypedTypeClient.updatePaymentStatusAsync(ScriptMain.XML_Rootobject.paymentStatusSearchCriteria, string, string, ScriptMain.XML_Rootobject.additionalPaymentInformation, ScriptMain.XML_Rootobject.auditLogInfo)' SC_9247ee39793e4fbfb81dbb91b51757ee C:\Users\local_XXXXXX\Temp\3\Vsta\SSIS_SC150\VstalAlxTASoaEKYdRaPNYHaLw\Vsta6SoZShz_z0CC80CnhonTBw\main.cs 230 Active

Sorry for length of this question. Any help would be appreciated.