There is a file which around 1.3GB, when we try to puslish it, it gives an error:
"The file is too large to be published. Power BI supports files up to 1024 MB."
To be noted,
We are using Power BI premium P1 Capacity. And We can't use Direct Query because Data modelling is done using various sources.
I found this artcile : https://docs.microsoft.com/en-us/power-bi/service-premium-large-datasets
But, in our case this does not work.
First, I cannot access your shared link. It says this document can't be found.
Then if you are using Power BI premium P1 capacity. It should support uploads of pbix files that are less than 3 GB. So in your scenario, first I would suggest you to verify that if your workspace is in the Power BI premium capacity. Go to Power BI Service, see if there exists a diamond icon next to your workspaces.
For more details about manage capacities within Power BI Premium, please refer: