A Scrum Master is frustrated that her team finds no value during Iteration retrospectives, and...

Two specific anti-patterns likely present within the team's retrospectives are:

The team identifies improvements but is not allowed to address them (B): This anti-pattern occurs when the team discusses potential improvements but lacks the authority or support to implement them. This leads to frustration and a sense of futility, as the team feels their efforts in retrospectives do not result in meaningful change.

The team does not identify and commit to improvement items for how they do their work (C): Effective retrospectives should result in actionable items that the team commits to addressing in the next iteration. If the team fails to identify and commit to these improvements, the retrospective becomes an empty ritual without real impact on the team's performance or processes.

SAFe Scrum Master References

SAFe Principles: continuous improvement and the importance of retrospectives

SAFe 5.0 framework: best practices for effective retrospectives