---
title: "Changes to Create a type"
method: POST
path: "/api/preview/types"
---

# Changes to Create a type

`POST /api/preview/types`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 7 of 12 revisions.

- **2026-10-27** `3a2c4ebeab51`: 4 info
- **2026-10-19** `5778844d1f9e`: 3 info
- **2026-09-30** `6a95af57f0f6`: 2 info
- **2026-09-12** `74a5f960149b`: 2 info
- **2026-08-29** `9ca3e15b9d44`: 1 info
- **2026-08-24** `0b9410b4856e`: 4 info
- **2026-08-18** `c690ac22ae04`: 1 info

## Changes

- **2026-10-27** `3a2c4ebeab51`: 4 info
  - added the optional property `guidance_author_pass` to the response with the `201` status
  - added the optional property `guidance_checks` to the response with the `201` status
  - added the optional property `guidance_updated_at` to the response with the `201` status
  - added the optional property `skill_renames_pending` to the response with the `201` status
- **2026-10-19** `5778844d1f9e`: 3 info
  - added the optional property `revision_history_available` to the response with the `201` status
  - added the optional property `version_written` to the response with the `201` status
  - added the optional property `viewer_can_write` to the response with the `201` status
- **2026-09-30** `6a95af57f0f6`: 2 info
  - added the optional property `slug_rename` to the response with the `201` status
  - response property `guidance_hash` deprecated
- **2026-09-12** `74a5f960149b`: 2 info
  - added the new `file` enum value to the request property `field_schema/items/type`
  - added the optional property `inbound_ref_count` to the response with the `201` status
- **2026-08-29** `9ca3e15b9d44`: 1 info
  - added the new optional request property `field_schema/items/derived`
- **2026-08-24** `0b9410b4856e`: 4 info
  - added the new optional request property `field_schema/items/columns/items/precision`
  - added the new optional request property `field_schema/items/columns/items/unit`
  - added the new optional request property `field_schema/items/precision`
  - added the new optional request property `field_schema/items/unit`
- **2026-08-18** `c690ac22ae04`: 1 info
  - added the optional property `form_packaged_at` to the response with the `201` status

---

[Operation](https://skmtc.dev/symbol/apis/symbol-api/docs/api/preview/types/post.md) - [API](https://skmtc.dev/symbol/apis/symbol-api.md) - [Page](https://skmtc.dev/symbol/apis/symbol-api/changes/api/preview/types/post)