Diagnosis
In model view &V4& for message type CONDA2 and sender-receivercombination &V2&, you attempted to edit a filter (&V1&), which isalready used in another model view.

Procedure
If you want to use message type CONDA2 for the same sender-receivercombination in different model views, the filter values must differ.
This prevents the Customizing data from being distributed twice.