what could be the reason for the below error??

[KM SN]

The script I am using is 

var latestcomment = fd_data._2__create_catalog_task.catalog_task.work_notes.getJournalEntry(1);
gs.log("comment - recent work notes ");
var comments = JSON.parse(latestcomment);
gs.log("comment - recent work notes after parse");

for(var i=0; i<comments.length; i++){
 if(comments[i]['Response']=='Reject'){
    gs.log("comment - its coming to for loop "+comments[i]['Name']);
    var rejected_comments = comments[i]["Comments"];
    gs.log("Rejected Comments are "+rejected_comments);
}
}
return rejected_comments;

The recent comment will look like:
[{"Name":"Gopinath ","Response":"Approve","Comments":"No longer Required"}, {"Name":"Gopinath Thangamani","Response":"Reject","Comments":"Approving it for further "}]

[Vasantharajan N]

@KM SN - line "var comments = JSON.parse(latestcomment);" is causing the problem as you are trying to get the j=worknotes journal entry which is not in the JSON format by default. Please parse only the comment which is expected to be JSON. 

[Vasantharajan N]

@KM SN - You can use the below syntax to parse the journal entry which holds JSON message. 

var latestcomment = fd_data._2__create_catalog_task.catalog_task.work_notes.getJournalEntry(1).split("\n")[1];

gs.log("comment - recent work notes ");
var comments = JSON.parse(latestcomment);
gs.log("comment - recent work notes after parse");

for(var i=0; i<comments.length; i++){
 if(comments[i]['Response']=='Reject'){
    gs.log("comment - its coming to for loop "+comments[i]['Name']);
    var rejected_comments = comments[i]["Comments"];
    gs.log("Rejected Comments are "+rejected_comments);
}
}
return rejected_comments;

I've added the expected JSON In worknotes and used the syntax provided above to parse the JSON 

[J Siva]

Hi @KM SN 

Just modify your script as below.

var latestcomment = fd_data._2__create_catalog_task.catalog_task.work_notes.getJournalEntry(1);
gs.log("comment - recent work notes ");
//---------------------START-------------------------------
var arr = latestcomment.split("(Additional comments)\n");
var comments = JSON.parse(arr[1].toString());
//---------------------END-------------------------------
gs.log("comment - recent work notes after parse");

for(var i=0; i<comments.length; i++){
 if(comments[i]['Response']=='Reject'){
    gs.log("comment - its coming to for loop "+comments[i]['Name']);
    var rejected_comments = comments[i]["Comments"];
    gs.log("Rejected Comments are "+rejected_comments);
}
}
return rejected_comments;

Hope this helps.
Regards
Siva