SAP Note 13118 - Planning at business area level

Symptom:

Planning at business area level does not appear to be possible.

Cause and prerequisites

Planning at business area level cannot be done using the
initial planning screen in FI.

Solution
Planning at business area level can be done in FI as of
Release 3.0. Planning at business area level can be carried
out via Extended General Ledger even before 3.0.
A corresponding set definition is necessary to do this in the
Extended General Ledger.