Hi @thecoolcoder,
Thanks for reaching out. In order to identify new sales via the API, you would need to manually compare your most recent GET request to the data that you have stored and update the data accordingly.
If you have any further questions, feel free to reach out to the API Team directly at developers@myob.com.
Thanks,JacobMYOB API TeamAre you a developer? Check out http://developer.myob.comLooking for an Add-on? Check out http://myob.com/addons/MYOB API Support Centre - https://apisupport.myob.com
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