# Which Problems Are Solved
As part of https://github.com/zitadel/zitadel/issues/11917 we want to
introduce error slugs so (API) clients can rely on stable,
machine-readable errors and act accordingly.
# How the Problems Are Solved
- Added a `NewSlug` helper function in the domain package.
- Added `ErrorDetails` to the `ZitadelError`
- Added an `zitadel.error.v2.ErrorDetail` proto message
- Updated the connectRPC error interceptor to map new slug based errors
to the new `ErrorDetail`
- Defined some common slugs and error functions like internal errors
- Defined (session) specific slugs used in the `DeleteSession` and
`CheckUser` functions and replaced old implementations
- Updated integration tests to check specific errors if the relation
database feature is enabled
- Updated doc and guideline to reflect the latest changes and decisions
- Updated DeleteSession endpoint API to list possible slugs
# Additional Changes
None
# Additional Context
- closes#11957
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Co-authored-by: Wim Van Laer <[email protected]>
# Which Problems Are Solved
As part of #11035 , this PR implements the user check logic for session
validation
# How the Problems Are Solved
- Add user and session repositories as invoke options, as well as their
mocks to prepare the ground for testing
- Implement the logic for the UserCheck command, following what has been
done on eventstore side
- Add a session permission chek interface to be used during the
`Validate()` part of the Commander
# Additional Context
This is a cherry-picked PR + minor changes, coming from
https://github.com/zitadel/zitadel/pull/11164
- Relates to #11035
---------
Co-authored-by: Silvan <[email protected]>
