UBE and BSFN connection

Hello, List,
I have two reports and two Client/Server packages. We are playing seek and
hide game with them.

The reports are R04575 (A/P Auto Payments - Update Driver) and R04576 (A/P
Auto Payment Register). You run them when you work with P04571 (Work with
Payment Groups)
Packages are ProdA and ProdB (ProdA + 3 ESU's).

These two reports work sufficiently on ProdA package, but give an error on
ProdB package.

The reports are not in the object lists of these ESU's.
I tried to split the reports with OCM - R04575 runs locally (ProdA), R04576
runs on the server (ProdB) or vice versa. It doesn't split. R04576 runs on
the same Data Source as R04575 does.
I migrated both reports from ProdA to ProdB. No change.

Could it be some BSFN, connected to the reports? How can I catch that beast?
Any advises are very welcome!

P.S. There is a benefit in all that game - I believe I can apply for an
account position now! ;-)
P.P.S. Sorry for the ERP10 issue - I slipped. :-(

Regards, Alex Shevchenko

XE SP18 Oracle 8.1.7, Solaris production
XE SP18 Oracle 8.1.7, Solaris test