&4 will be transported, but not &2 as part of "&1"

What causes this issue?

You chose &V4&. The assigned objects either implicitly use, or are
partially dependent on &V2&. This constellation is only beneficial if
the &V2& are already defined in the target system, or if they will be
defined in the course of further transports or additional customizing.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

If desired, you can also select the &V2& from within the object group
"&V1&".

Error message extract from SAP system. Copyright SAP SE.