EgorTarsenko opened a new issue, #35941:
URL: https://github.com/apache/superset/issues/35941
### Bug description
# Bug: `TAGGING_SYSTEM` Feature Flag Breaks Dashboard Creation in Superset
4.1.3
## Description
The `TAGGING_SYSTEM: True` feature flag causes dashboard creation to fail in
Superset 4.1.3 with a foreign key constraint violation.
## Steps to Reproduce
1. Enable the tagging system feature flag:
```python
"TAGGING_SYSTEM": True
```
2. Attempt to create a new dashboard via the UI
3. Error occurs immediately upon creation
## Expected Behavior
Dashboard should be created successfully with tagging system enabled.
## Actual Behavior
Dashboard creation fails with the following error:
```
sqlalchemy.exc.IntegrityError: (raised as a result of Query-invoked
autoflush; consider using a session.no_autoflush block if this flush is
occurring prematurely)
(psycopg2.errors.ForeignKeyViolation) insert or update on table
"tagged_object" violates foreign key constraint "tagged_object_object_id_fkey"
DETAIL: Key (object_id)=(72) is not present in table "slices".
[SQL: INSERT INTO tagged_object (created_on, changed_on, tag_id, object_id,
object_type, created_by_fk, changed_by_fk) VALUES (%(created_on)s,
%(changed_on)s, %(tag_id)s, %(object_id)s, %(object_type)s, %(created_by_fk)s,
%(changed_by_fk)s) RETURNING tagged_object.id]
[parameters: {'created_on': datetime.datetime(2025, 11, 2, 11, 8, 17,
190751), 'changed_on': datetime.datetime(2025, 11, 2, 11, 8, 17, 190754),
'tag_id': 73, 'object_id': 72, 'object_type': 'dashboard', 'created_by_fk': 2,
'changed_by_fk': 2}]
(Background on this error at: https://sqlalche.me/e/14/gkpj)
```
## Additional Context
- **Also affected:** Unable to attach tags to existing dashboards when this
feature is enabled
- **Root cause observation:** The error indicates a foreign key constraint
violation where `object_id=72` with `object_type='dashboard'` is being inserted
into `tagged_object` table, but the constraint expects this to reference the
`slices` table (which contains charts, not dashboards)
- **Possible cause:** Incorrect foreign key constraint configuration or
incorrect `object_type` handling in the tagging system
## Environment
- **Superset version:** 4.1.3
- **Database:** PostgreSQL (psycopg2)
- **Feature flag:** `TAGGING_SYSTEM: True`
## Severity
**High** - Blocks dashboard creation entirely when tagging system is enabled.
### Screenshots/recordings
_No response_
### Superset version
master / latest-dev
### Python version
3.9
### Node version
16
### Browser
Chrome
### Additional context
_No response_
### Checklist
- [ ] I have searched Superset docs and Slack and didn't find a solution to
my problem.
- [ ] I have searched the GitHub issue tracker and didn't find a similar bug
report.
- [ ] I have checked Superset's logs for errors and if I found a relevant
Python stacktrace, I included it here as text in the "additional context"
section.
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