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## API reference corrections across twenty specs

Corrected reference pages that did not match live API behavior. The APIs are unchanged; the pages now match what the endpoints accept and return.

* **Response shapes:** the four Channel Metafield operations documented the wrong body. They now match the `{ data, meta }` response the gateway returns. Get Deployment Event Stream and Tail Worker Logs now show a field table per event.
* **Error responses:** Create Site, Update Site, Delete Multiple Metafields, Update Redirects, and the shipping customs-information operations now document the `422` they return. Shipping also documents `400` and `413`.
* **Requests:** Create Site documents the optional `certificate` object, Update Email Template documents the three fields it actually reads, List Subscribers documents `sort` and `direction`, and shipping rate requests document `rate_options`.
* **Types, headers, and scopes:** `site_id` and `channel_id` are integers, not strings. Tax customer endpoints require `Accept`, not `Content-Type`. Promotion Settings requires `store_v2_information`, not `store_v2_marketing`.

If you built against any of these pages, recheck your request and response handling:

* [Get Channel Metafields](/developer/api-reference/rest/admin/management/channels/metafields/get-channel-metafields)
* [Create a Site](/developer/api-reference/rest/admin/management/sites/create-site)
* [Get Tax Customers](/developer/api-reference/rest/admin/management/tax/tax-customers/get-tax-customers)
* [Get Deployment Event Stream](/developer/api-reference/rest/admin/management/infrastructure-hosting/deployments/get-deployment-event-stream)