What's wrong with my XML when I want to addTabularRecords?

What's wrong with my XML when I want to addTabularRecords?

Hi,


The following is my code in creator 

token="XXXXXX";
iid=594532000000473001;
aaa= "<Candidates>"+
"<FL val='Experience Details'>"+
"<TR no='0'>"+
"<TL val='Occupation / Title'><![CDATA[test]]</TL>"+
"<TL val='Company'><![CDATA[test]]</TL>"+
"<TL val='Work Duration_From'><![CDATA[3-2020]]></TL>"+
"<TL val='I currently work here'><![CDATA[true]]></TL>"+
"</TR> </FL> "+
"</Candidates>";



myMap = map();
myMap.put("authtoken", token);
myMap.put("id", iid);
myMap.put("xmlData", aaa);
myMap.put("scope", "recruitapi");

exp = postUrl("https://recruit.zoho.com/recruit/internal/xml/Candidates/addTabularRecords",myMap);

after I execute above code  Zoho recruit reponse following message. 

<?xml version="1.0" encoding="UTF-8" ?><response uri="/recruit/internal/xml/Candidates/addTabularRecords"><nodata><code>4600</code><message>Unable to process your request. Please verify if the name and value is appropriate for the mandatory parameter.</message></nodata></response>