ReportID for PBIX File

you can use Rest API or go to following link where you can call resources to get all reports:

http://docs.powerbi.apiary.io/#reference/report/reports-collection/list-all-reports?console=1

Hi vickyprudhvi,

The Report ID is created after the pbix file is published to Power BI service. And you can find it on the URL when you view the published report on your browser. 

You can also use the REST API to get a list of all report objects that includes a name and id as parry2k mentioned above. :smileyhappy:

Regards