Outbound REST payload not being escaped when we use the "Test" button On the HTTP method. When we use the REST API explored this value is escaped as expected.DescriptionOutbound REST payload not being escaped when we use the "Test" button On the HTTP method. When we use the REST API explored this value is escaped as expected.Steps to Reproduce Steps to Reproduce: 1. Navigate to "System Web Services > Outbound > REST Message" and create a new REST message.2. Set the "Endpoint" to <instance/>/api/now/table/incident3. Save the record and under "HTTP Methods" create a new method.4. Set the following on the HTTP Method form. a) Name:<any name> b) HTTP Method: POST c) EndPoint: <instance/>/api/now/table/incident5. Under the Authentication tab enter the following: a) Authentication Type: Basic b) Basic auth profile : <Create an authentication Profile for the target instance>6. Under the "HTTP Request" tab enter the following: a) In the field labeled "Content" paste the text below. {"short_description":"${short_description}"} b) Under Variable substitutions click on New and enter the following values: Name: short_description Test Value: /!\ 7. Enable glide.rest.debug on the target instance 8. Click on test.9. You'll get a response similar to the one below. {"error":{"message":"java.lang.IllegalArgumentException: Cannot decode: java.io.StringReader@15f7e20","detail":""},"status":"failure"}10. From the logs in the target instance you'll see that the payload was not escaped. See sample below. 2020-05-06 01:45:45 (589) API_INT-thread-4 82721AE241A85C504E82FA4ED1FE9B16 txid=c6721ae241a8 DEBUG: #625740 [REST API] RequestDeserializer : Incoming Request Body: {"short_description":"12455 /!\"}11. When we use the same payload on the REST API explorer the payload is escaped with the value below as expected. {"short_description":"/!\\"}WorkaroundIt will be required to manually escape any value before you make the call, since it does not currently auto do it for you.If the rest message is run through script, it should be able to encode as expected.Related Problem: PRB1402823