The view cluster contains subdialogs with and w/o navigation subscreens.

What causes this issue?

From Release 46A view cluster navigation uses a Tree Control.
The navigation subscreen is no longer put in the view maintenance
screens of new maintenance dialogs in a modified view cluster when it
activated. Existing subscreens are dynamically compressed away at
runtime.
This view cluster &V1& contains maintenance dialogs both with and
without navigation subscreens.

System Response

The view cluster is activated nevertheless. The navigation subscreens
are not active at runtime.

How to fix this error?

You can delete the navigation subscreens in the view maintenance
screens as follows:
Reactivate the view cluster and confirm the deletion of the subscreen
in the 'View cluster navigation' popup.
Use the program <LS>RSVCLNAVI</> to delete the navigation subscreen
from the screen.
The program can also edit all the view clusters in a package.
You can also delete the subscreens from the view maintenance dialogs
manually in the Screen Painter.
Note:
Navigation subscreens in maintenance dialog detail screens must always
be removed manually in the Screen Painter, because they are not
inserted automatically. User modules for navigating in detail screens
must also be removed manually.
Possible incompatibilities using the Tree Control:
Manipulation in user-defined events of the global internal table
<LS>VCL_STRUC_TAB</> to influence the navigation subscreen structure
may not affect the Tree Control structure.

Error message extract from SAP system. Copyright SAP SE.