# Change history: Pipelines

[← Changelog](/docs/changelog). Entries: 3.

- 2026-10-29 [FIX-1029-3: The pipeline schema describes isSystem and the missing createdDate](/docs/changelog/2026-10-29#fix-1029-3-the-pipeline-schema-describes-issystem-and-the-missing-createddate)
- 2026-07-14 [FIX-0714-9: entityTypeId validation: junk forms → 400 instead of silent truncation](/docs/changelog/2026-07-14#fix-0714-9-entitytypeid-validation-junk-forms-400-instead-of-silent-truncation)
- 2026-07-02 [BC-0702-10: categories: code and isDefault marked read-only (were phantom-writable)](/docs/changelog/2026-07-02#bc-0702-10-categories-code-and-isdefault-marked-read-only-were-phantom-writable)