sidshas03 commented on issue #55693:
URL: https://github.com/apache/airflow/issues/55693#issuecomment-3301256263
**Update:** I’ve opened **PR #55750** to resolve this.
* Clarifies the limit is **per tag** (100 chars), not combined
* Adds **early validation** in the SDK DAG path and raises an
`AirflowException` naming the offending tag (short preview) and its **actual
length**
* Adds a concise docs note under core DAG concepts about the **100-char
per-tag** limit
* Includes unit tests:
* 100 chars → allowed
* 101 chars → fails with clear message
* multiple tags with one too long → fails and identifies the long tag
No DB/schema changes; this aligns with the existing `dag_tag.name
VARCHAR(100)` constraint.
**PR:** #55750 — includes Resolves #55693
If the community prefers increasing the limit, I’m happy to follow up with a
separate proposal + migration after this UX fix.
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