<PixiAddOrderLinePost200TextXmlResponse>
  <CanAdd>true</CanAdd>
  <OrderNr>0</OrderNr>
  <ErrorMessage>string</ErrorMessage>
  <OrderlineId>0</OrderlineId>
  <OrderNrExternal>string</OrderNrExternal>
</PixiAddOrderLinePost200TextXmlResponse>

POST https://apigateway.descartes.com/tms/pixi/
Content-Type: text/xml; charset=utf-8
# echo -n '{{username}}:{{password}}' | base64 | pbcopy
Authorization: Basic {{token}}

<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
                   xmlns:ns1="https://apigateway.descartes.com/tms/pixi/"
                   xmlns:xsd="http://www.w3.org/2001/XMLSchema"
                   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                   SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
    <SOAP-ENV:Body>
        <ns1:pixiAddOrderLine>
            <Date xsi:type="xsd:string">YYYY-MM-DD hh:mm:ss</Date>
            <Extras xsi:type="xsd:string">abcdefg</Extras>
            <Status xsi:type="xsd:string">STO</Status>
            <DF_Type xsi:type="xsd:string">1</DF_Type>
            <ItemKey xsi:type="xsd:integer">123</ItemKey>
            <Product xsi:type="xsd:string">abcdefg</Product>
            <Discount xsi:type="xsd:number">9.99</Discount>
            <Employee xsi:type="xsd:string">abcdefg</Employee>
            <ItemName xsi:type="xsd:string">abcdefg</ItemName>
            <Quantity xsi:type="xsd:integer">123</Quantity>
            <ShipCost xsi:type="xsd:number">9.99</ShipCost>
            <FullPrice xsi:type="xsd:number">9.99</FullPrice>
            <ItemNrInt xsi:type="xsd:string">abcdefg</ItemNrInt>
            <Verfahren xsi:type="xsd:string">abcdefg</Verfahren>
            <VoucherID xsi:type="xsd:string">abcdefg</VoucherID>
            <LocationID xsi:type="xsd:string">002</LocationID>
            <GiftMessage xsi:type="xsd:string">abcdefg</GiftMessage>
            <PixiOrderNr xsi:type="xsd:integer">123</PixiOrderNr> <!-- required -->
            <SerialNumber xsi:type="xsd:string">abcdefg</SerialNumber>
            <AddressRemarks xsi:type="xsd:string">abcdefg</AddressRemarks>
            <ItemNrExternal xsi:type="xsd:string">abcdefg</ItemNrExternal>
            <DiscountPercent xsi:type="xsd:number">9.99</DiscountPercent>
            <DiscountedPrice xsi:type="xsd:number">9.99</DiscountedPrice>
            <ItemSpecialNote xsi:type="xsd:string">abcdefg</ItemSpecialNote>
            <OrderNrExternal xsi:type="xsd:string">abcdefg</OrderNrExternal>
            <UsePaymentStatus xsi:type="xsd:boolean">0 or 1</UsePaymentStatus>
            <FullPriceDiscountValue xsi:type="xsd:number">9.99</FullPriceDiscountValue>
        </ns1:pixiAddOrderLine>
    </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

<?php

getPixiSoapClientResponse('pixiAddOrderLine', [
    'Date' => 'YYYY-MM-DD hh:mm:ss', // string
    'Extras' => 'abcdefg', // string
    'Status' => 'STO', // string
    'DF_Type' => '1', // string
    'ItemKey' => '123', // integer
    'Product' => 'abcdefg', // string
    'Discount' => '9.99', // number
    'Employee' => 'abcdefg', // string
    'ItemName' => 'abcdefg', // string
    'Quantity' => '123', // integer
    'ShipCost' => '9.99', // number
    'FullPrice' => '9.99', // number
    'ItemNrInt' => 'abcdefg', // string
    'Verfahren' => 'abcdefg', // string
    'VoucherID' => 'abcdefg', // string
    'LocationID' => '002', // string
    'GiftMessage' => 'abcdefg', // string
    'PixiOrderNr' => '123', // integer (required)
    'SerialNumber' => 'abcdefg', // string
    'AddressRemarks' => 'abcdefg', // string
    'ItemNrExternal' => 'abcdefg', // string
    'DiscountPercent' => '9.99', // number
    'DiscountedPrice' => '9.99', // number
    'ItemSpecialNote' => 'abcdefg', // string
    'OrderNrExternal' => 'abcdefg', // string
    'UsePaymentStatus' => '0 or 1', // boolean
    'FullPriceDiscountValue' => '9.99', // number
]);

function getPixiSoapClientResponse(string $method, array $arguments = [])
{
    $soapArguments = [];
    foreach ($arguments as $key => $value) {
        $soapArguments[] = new SoapVar($value, null, '', '', $key);
    }

    $soapClient = new SoapClient(null, [
        'login' => '...',
        'password' => '...',
        'uri' => 'https://apigateway.descartes.com/tms/pixi/',
        'location' => 'https://apigateway.descartes.com/tms/pixi/',
    ]);

    return $soapClient->__call($method, $soapArguments);
}