Can you please check or share the logs when you see this behaviour with 500 http status code?

Hi Baigh, 

Yes, the source from a js file. Thanks.

Related your question on this thread https://pdn.pega.com/community/product-support/question/how-create-rest-integration-method-post

Is this rest working fine with soapUI or any other tool? If yes, get the json response and generate rest data model from there.

I have generate the connector despite the error on the test.

but when I test connectivity on the generated connector it show HTTP_METHOD is GET, but the HTTP_METHOD that I choose was POST