> ## Documentation Index
> Fetch the complete documentation index at: https://cantonfoundation-splice-openapi-manual-pages-preview.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# List all previous synchronizer migrations in this Splice network's history

<div class="x2mdx-ref-page x2mdx-ref-page--operation x2mdx-ref-page--manual-api" />

<div class="x2mdx-ref-hero">
  <p class="x2mdx-ref-eyebrow">Scan API</p>

  <h1 class="x2mdx-ref-title">List all previous synchronizer migrations in this Splice network's history</h1>

  <div class="x2mdx-ref-badges">
    <span class="x2mdx-ref-badge x2mdx-ref-badge--protocol">OpenAPI</span>

    <span class="x2mdx-ref-badge x2mdx-ref-badge--added">Since 0.5.10</span>
  </div>
</div>

List all previous synchronizer migrations in this Splice network's history.

## Protocol Details

<div class="x2mdx-ref-meta-grid">
  <div class="x2mdx-ref-meta-item">
    <span class="x2mdx-ref-meta-label">Operation ID</span>
    <span class="x2mdx-ref-meta-value">getMigrationInfo</span>
  </div>

  <div class="x2mdx-ref-meta-item">
    <span class="x2mdx-ref-meta-label">Published</span>
    <span class="x2mdx-ref-meta-value">0.7.4</span>
  </div>

  <div class="x2mdx-ref-meta-item">
    <span class="x2mdx-ref-meta-label">Specification</span>
    <span class="x2mdx-ref-meta-value"><a href="/openapi/splice/scan/scan.yaml">Download OpenAPI</a></span>
  </div>
</div>

## Inputs

### Request body

<div class="x2mdx-ref-badges">
  <span class="x2mdx-ref-badge x2mdx-ref-badge--neutral">application/json</span>
</div>

<ParamField body="migration_id" type="number" required>
  OpenAPI type: `integer (int64)`.
</ParamField>

## Outputs

### 200

<div class="x2mdx-ref-badges">
  <span class="x2mdx-ref-badge x2mdx-ref-badge--neutral">application/json</span>
</div>

<ResponseField name="previous_migration_id" type="integer (int64)">
  The migration id that was active before the given migration id, if any.
</ResponseField>

<ResponseField name="record_time_range" type="RecordTimeRange[]" required>
  All domains for which there are updates in the given migration id, along with the record time of the newest and oldest update associated with each domain
</ResponseField>

<ResponseField name="last_import_update_id" type="string">
  The update id of the last import update (where import updates are sorted by update id, ascending) for the given migration id, if any
</ResponseField>

<ResponseField name="complete" type="boolean" required>
  True if this scan has all non-import updates for given migration id
</ResponseField>

<ResponseField name="import_updates_complete" type="boolean">
  True if this scan has all import updates for the given migration id
</ResponseField>

### 404

<div class="x2mdx-ref-badges">
  <span class="x2mdx-ref-badge x2mdx-ref-badge--neutral">application/json</span>
</div>

<ResponseField name="error" type="string" required />

## History

<div class="x2mdx-ref-history" aria-label="Reference history">
  <div class="x2mdx-ref-history-event x2mdx-ref-history-event--introduced">
    <div class="x2mdx-ref-history-event-head">
      <span class="x2mdx-ref-history-event-label">Introduced</span>
      <code class="x2mdx-ref-history-event-version">0.5.10</code>
    </div>
  </div>
</div>

<RequestExample>
  ```bash Request theme={null}
  curl --request POST \
    --url 'https://scan.sv-1.global.canton.network.sync.global/api/scan/v0/backfilling/migration-info' \
    --header 'Content-Type: application/json' \
    --data '{"migration_id":0}'
  ```
</RequestExample>

<ResponseExample>
  ```json 200 response theme={null}
  {
    "previous_migration_id": 0,
    "record_time_range": [
      {}
    ],
    "last_import_update_id": "string",
    "complete": false,
    "import_updates_complete": false
  }
  ```
</ResponseExample>