Separate credentials for each workspace - Security issue

Thank very much for your answer, but this solution will no solve my problem.

Surely I have not explained my problem well.

I have created a report on powerbi desktop that, among other data sources, connects to the Microsoft management API and also uses the Azure cost connector.

I have created two diferent workspaces, Company A and Company B and I have uploaded the report to the Power BI service

In each of the workspaces. I have configured the credentials for the management API data source with a different user corresponding to each company (workspace company A -> [email protected] and for the workspace of company B -> user @ companyB.com) as well as the tenant (parameter) and the user corresponding to each one in the cost connector data source.

I have created an application for each of them.

The objective is to see in each application only the information corresponding to each of the companies.

Now when I update the datasets in the company A application I see the cost data of company A (cost connector) and, for example the user data (API management) of company A, perfect.

But in the application of company B I see the cost data of company B but the azure users data of company A?

How is this possible if I have configured the access credentials of a user from a different company in that data source?

Thank you

Luis