The payload is not valid JSON

[Royal1]

r.setStringParameterNoEscape('comments', current.comments.getJournalEntry(1));

while sending the comments inthe above REST API form , i am geeting the below error 

Please let me know how to send the work notes or comment  in REST calls

error:

responsebody {"error":{"message":"Exception while reading request","detail":"The payload is not valid JSON."},"status":"failure"}

[Ankur Bawiskar]

@Royal1 

when you use this current.comments.getJournalEntry(1) it gives you timestamp and user detail as well

try this once

var comments = current.comments.getJournalEntry(1);

// use this to remove the timestamp and user details and just get the value/text part
var dateRE = /^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}.*\n/;
comments = comments.replace(dateRE, '');	

r.setStringParameterNoEscape('comments', comments);

If my response helped please mark it correct and close the thread so that it benefits future readers.

[Royal1]

its removing the time stamp , but my comments are not going to another system. still the same error, check the screenshot   

[Ankur Bawiskar]

@Royal1 

can you try to hard-code the comments ?

if it still doesn't work check with the 3rd party team and inform them about the same

[Royal1]

i found the issue but dont know the solution , same issue for description fields as well.

if i am sending the data into second line or multiple lines i am getting this error. with single line data no issues.

responsebody {"error":{"message":"Exception while reading request","detail":"The payload is not valid JSON."},"status":"failure"}

with 400 http response code

below is the body: