Hi @Rajas Thakur ,
Welcome to Microsoft Q&A platform and thankyou for posting your query.
Going through your query, it looks like the JSON output of dataflow is giving you SubStatus
as the property instead of runStatus
Property. Please let me know if my understanding is incorrect.
Could you please share the screenshot of the same so that I can approach the internal product team to investigate further. I tried to reproduce your scenario but didn't face similar challenge. For me , dataflow output gave runStatus property. Thanks in advance !