Kindly follow below instruction to duplicate Response Due by time under Custom Additional Field.
* Download attached files and place it under Servicedeskplus-msp<home>\integration\custom_scripts
* Edit Configuration.json file and update the information as shown below. ( Login Name, Password, Server you may get these information from Admin -> Outgoing Mail Server settings)
* Edit update_request_udfField.py file and update the UDF file value under highlighted field.( You can get the field name from Admin -> Incident additional field under API Field Name)
* Navigate to Admin -> Custom trigger and update the field as shown below. You may choose any criteria based on your requirement. (py update_request_udfField.py $COMPLETE_V3_JSON_FILE)
* Restart the application service and verify the status.