Update Bulk Sync Schema

Replaces the configuration of a single schema on a bulk sync. This is a full replacement: every field in the request body is written to the schema, and any field you omit is cleared or reset to its default. Fetch the current configuration with [`GET /api/bulk/syncs/{id}/schemas/{schema_id}`](../../../../../../api-reference/bulk-sync/schemas/get) first if you want to preserve existing settings while changing only a subset. Omitting `fields` enables all available fields on the schema. To control which fields are enabled, include the `fields` array with explicit `enabled` values. > 📘 To update multiple schemas in a single request without affecting others, > use the partial-update endpoint > [`PATCH /api/bulk/syncs/{id}/schemas`](../../../../../../api-reference/bulk-sync/schemas/patch) > instead.