You need to create a reporting user in BI Publisher which matches an equivalent user in P6, for every user who will use the reporting feature, to ensure you have users who can run reports in both applications.
To create the administrative user:
Log into BI Publisher as an administrator.
Notes:
Some steps vary depending on whether you are using BI Publisher 10g or 11g. The steps distinguish between 10g and 11g if they differ.
The instructions assume you are using the BI Publisher Security Model for 10g or 11g.
Non-admin users can run reports as well.
In BI Publisher 10g, click the Admin tab.
In BI Publisher 11g, click Administration at the top of your screen.
On the Administration page, click Users under Security Center.
On the Users tab, click Create User.
On the Create User page, enter a Username and Password. Click Apply.
On the Users tab, click Assign Roles next to the new user.
On the Assign Roles page, assign the P6Reports role and click Apply.