Hi Kevin,
I think you have to provide following header in your request.
Content-Type: application/json
And below is the body string:
"{ 'Password ': 'openthedoor ', 'AppVersion ': '1 ', 'AppComments ': ’ ', 'UserName ': 'DM123456 ', 'AppKey ': 'ABC '} "
I tried it with this and the error I got was “{"AdditionalInfo":null,"StatusCode":0,"HttpStatus":401,"ErrorMessage":"Sorry, your login has failed|This is because your login credentials do not match our records.","ErrorCode":4010}”
I know it ended in error, but i dont have the valid creds so it was expected. Atleast it failed with different error right?
I have attached the workflow too for your reference.
apidemo.zip (2.5 KB)
Please try it with by replacing your creds.