Mapper Not Wrapping Array Content in Separate Objects

Oracle Integration Classic (Version 20.1.3)

Hi Community

We are using OIC Classic with the REST Adapter. The REST web service requires a POST and expects the following payload structure:

{
    "name": "A string",
    "parameters": [
        {
            "InvoiceNumber": "A string"
        },
        {
            "BusinessUnit": "A string"
        },
        {
            "SupplierName": "A string"
        }
    ]
}

When we wire this up via the mapper, the result is that OIC sends the request payload without the values enclosed in a single object rather than each value in a separate object:

{
    "name": "ValidateInvoice",
    "parameters": [
       {
         "InvoiceNumber": "ABCD-1234"
         "BusinessUnit": "My Business Unit"
         "SupplierName": "ABC Limited"
       }
     ]
}

 The XSLT in the mapper is as follows:

<xsl:template match="/" xml:id="id_11">
       <nstrgmpr:execute xml:id="id_12">
          <ns35:request-wrapper xml:id="id_41">
             <ns35:parameters xml:id="id_42">
                <ns35:InvoiceNumber xml:id="id_47">
                   <xsl:value-of xml:id="id_48" select="$GetInvoiceHeader/nsmpr1:executeResponse/ns25:response-wrapper/ns25:data/ns25:data/ns25:INVOICE_NUMBER"/>
                </ns35:InvoiceNumber>
                <ns35:BusinessUnit xml:id="id_45">
                   <xsl:value-of xml:id="id_46" select="$GetInvoiceHeader/nsmpr1:executeResponse/ns25:response-wrapper/ns25:data/ns25:data/ns25:BUSINESS_UNIT"/>
                </ns35:BusinessUnit>
                <ns35:Supplier xml:id="id_43">
                   <xsl:value-of xml:id="id_44" select="$GetInvoiceHeader/nsmpr1:executeResponse/ns25:response-wrapper/ns25:data/ns25:data/ns25:SUPPLIER_NAME"/>
                </ns35:Supplier>
             </ns35:parameters>
          </ns35:request-wrapper>
       </nstrgmpr:execute>
    </xsl:template>