ModSecurity: XML parser error: XML: Failed parsing document

I am trying to add a product on Magento ver. 1.9.2.4. using SOAP API:

https://www.domainname.com/index.php/api/v2_soap/

using the following XML:

<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
  <soap:Body>
    <catalogProductCreate xmlns="urn:Magento">
        <sessionId xsi:type="xsd:string">sessioidhere</sessionId>
        <type xsi:type="xsd:string">simple</type>
        <set xsi:type="xsd:int">4</set>
        <sku xsi:type="xsd:string">skuhere</sku>
        <productData xsi:type="ns1:catalogProductCreateEntity" xmlns:ns1="urn:Magento">
            <name xsi:type="xsd:string">productnamehere</name>
            <price xsi:type="xsd:decimal">2.6</price>
            <status xsi:type="xsd:int">1</status>
            <visibility xsi:type="xsd:int">4</visibility>
            <weight xsi:type="xsd:decimal">0.2</weight>
            <tax_class_id xsi:type="xsd:int">0</tax_class_id>
            <websites>
                <item xsi:type="xsd:int">1</item>
            </websites>

            <short_description xsi:type="xsd:string">shortDescriptionHere</short_description>
            <description xsi:type="xsd:string"><![CDATA[DescriptionHereInHTMLTAGS]]></description>
            <meta_title xsi:type="xsd:string">metaTitleHere</meta_title>
            <meta_description xsi:type="xsd:string">metaDescriptionHere</meta_description>
      </productData>
      <store xsi:type="xsd:string">0</store>
    </catalogProductCreate>
  </soap:Body>
</soap:Envelope>

I am replacing the dummy values above with the actual values.

Now the issue is, the product gets created rarely and most of the time like 99% of the time I get the following error:

500 Internal Server Error: ModSecurity: XML parser error: XML: Failed parsing document.

I have been searching for like 2 days but I can't seem to figure out what the problem is. I am no expert in XML or even on Magento and the reason I am using the XML is that I am calling the API from a make.com automation scenario.

Can someone please point out what might be going on or if there are issues in the XML file?

Thank you.