Operation crosses architectural boundary (Reviewer Review)
This is a review that reports operations that cross architectural boundaries (shown as a dotted line on sequence diagrams).
Consequences
What is meant by architectural boundaries differs from model to model, by they are always important.
An architectural boundary could be between thread, processes, networks or hardware.
In every case special attention should be paid to these operations.
Strategy
Check that you are happy with the operation and then add it to the ignore list.