# Which Problems Are Solved
The recently introduced notification queue have potential race conditions.
# How the Problems Are Solved
Current code is refactored to use the queue package, which is safe in
regards of concurrency.
# Additional Changes
- the queue is included in startup
- improved code quality of queue
# Additional Context
- closes https://github.com/zitadel/zitadel/issues/9278
# Which Problems Are Solved
OIDC applications can configure the used login version, which is
currently not possible for SAML applications.
# How the Problems Are Solved
Add the same functionality dependent on the feature-flag for SAML
applications.
# Additional Changes
None
# Additional Context
Closes#9267
Follow up issue for frontend changes #9354
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Co-authored-by: Livio Spring <livio.a@gmail.com>
