> For the complete documentation index, see [llms.txt](https://developer.emporix.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.emporix.io/api-documentation/api-guides/utilities/audit-logs-changelog/api-reference/models.md).

# Models

## The ChangelogHistoryResponse object

```json
{"openapi":"3.0.0","info":{"title":"Audit Logs (Changelog) Service","version":"0.0.1"},"components":{"schemas":{"ChangelogHistoryResponse":{"type":"object","description":"Paginated tenant changelog history.","properties":{"items":{"type":"array","description":"List of changed entries for the requested page.","items":{"$ref":"#/components/schemas/ChangelogChangeItem"}},"page":{"type":"integer","description":"Current page number. The number of the first page is 1."},"size":{"type":"integer","description":"Number of items requested per page."},"totalElements":{"type":"integer","format":"int64","description":"Total number of changed entries matching the query."},"totalPages":{"type":"integer","description":"Total number of pages for the matching result set."}},"required":["items","page","size","totalElements","totalPages"]},"ChangelogChangeItem":{"type":"object","description":"A single changelog entry describing a change to a platform entity.","properties":{"at":{"type":"string","format":"date-time","description":"ISO-8601 UTC timestamp with milliseconds when the change occurred, for example `2026-06-01T13:01:29.123Z`.\n"},"type":{"type":"string","enum":["create","update","delete"],"description":"Change type returned by the API.\n* `create` — Document insert.\n* `update` — Document update or replace.\n* `delete` — Document delete.\n"},"entity":{"type":"string","description":"Logical entity type of the changed document, for example `order`, `customer`, `company`, `product`, `segment`, `group`, `group-assignment`, `coupon`, or a custom entity created with the Schema Service.\n"},"entityId":{"type":"string","description":"Unique identifier of the changed document."},"name":{"type":"string","description":"Optional display name of the changed document when available."},"paths":{"type":"object","additionalProperties":{"$ref":"#/components/schemas/PathValueChange"},"description":"Flattened map of changed field paths to before/after values derived from the change patch.\n"},"schemaVersion":{"type":"string","description":"Optional schema or document format version associated with the change."},"actor":{"type":"string","description":"Actor display name that performed the change. Possible values include a person name, `system`, `external`, or `unknown`.\n"},"related":{"type":"array","description":"Related entities linked to the changed document, for example junction-style references.","items":{"$ref":"#/components/schemas/ChangelogRelatedItem"}}}},"PathValueChange":{"type":"object","description":"Before and after values for a changed field path.","properties":{"before":{"description":"Value of the field before the change. Omitted when not available."},"after":{"description":"Value of the field after the change. Omitted when not available."}}},"ChangelogRelatedItem":{"type":"object","description":"A related entity referenced by a changelog entry.","properties":{"entity":{"type":"string","description":"Related entity type, for example `group` or `customer`."},"entityId":{"type":"string","description":"Unique identifier of the related entity."}}}}}}
```

## The ChangelogChangeItem object

```json
{"openapi":"3.0.0","info":{"title":"Audit Logs (Changelog) Service","version":"0.0.1"},"components":{"schemas":{"ChangelogChangeItem":{"type":"object","description":"A single changelog entry describing a change to a platform entity.","properties":{"at":{"type":"string","format":"date-time","description":"ISO-8601 UTC timestamp with milliseconds when the change occurred, for example `2026-06-01T13:01:29.123Z`.\n"},"type":{"type":"string","enum":["create","update","delete"],"description":"Change type returned by the API.\n* `create` — Document insert.\n* `update` — Document update or replace.\n* `delete` — Document delete.\n"},"entity":{"type":"string","description":"Logical entity type of the changed document, for example `order`, `customer`, `company`, `product`, `segment`, `group`, `group-assignment`, `coupon`, or a custom entity created with the Schema Service.\n"},"entityId":{"type":"string","description":"Unique identifier of the changed document."},"name":{"type":"string","description":"Optional display name of the changed document when available."},"paths":{"type":"object","additionalProperties":{"$ref":"#/components/schemas/PathValueChange"},"description":"Flattened map of changed field paths to before/after values derived from the change patch.\n"},"schemaVersion":{"type":"string","description":"Optional schema or document format version associated with the change."},"actor":{"type":"string","description":"Actor display name that performed the change. Possible values include a person name, `system`, `external`, or `unknown`.\n"},"related":{"type":"array","description":"Related entities linked to the changed document, for example junction-style references.","items":{"$ref":"#/components/schemas/ChangelogRelatedItem"}}}},"PathValueChange":{"type":"object","description":"Before and after values for a changed field path.","properties":{"before":{"description":"Value of the field before the change. Omitted when not available."},"after":{"description":"Value of the field after the change. Omitted when not available."}}},"ChangelogRelatedItem":{"type":"object","description":"A related entity referenced by a changelog entry.","properties":{"entity":{"type":"string","description":"Related entity type, for example `group` or `customer`."},"entityId":{"type":"string","description":"Unique identifier of the related entity."}}}}}}
```

## The PathValueChange object

```json
{"openapi":"3.0.0","info":{"title":"Audit Logs (Changelog) Service","version":"0.0.1"},"components":{"schemas":{"PathValueChange":{"type":"object","description":"Before and after values for a changed field path.","properties":{"before":{"description":"Value of the field before the change. Omitted when not available."},"after":{"description":"Value of the field after the change. Omitted when not available."}}}}}}
```

## The ChangelogRelatedItem object

```json
{"openapi":"3.0.0","info":{"title":"Audit Logs (Changelog) Service","version":"0.0.1"},"components":{"schemas":{"ChangelogRelatedItem":{"type":"object","description":"A related entity referenced by a changelog entry.","properties":{"entity":{"type":"string","description":"Related entity type, for example `group` or `customer`."},"entityId":{"type":"string","description":"Unique identifier of the related entity."}}}}}}
```

## The ErrorMessage object

```json
{"openapi":"3.0.0","info":{"title":"Audit Logs (Changelog) Service","version":"0.0.1"},"components":{"schemas":{"ErrorMessage":{"type":"object","properties":{"status":{"type":"integer","description":"HTTP status code."},"type":{"type":"string","description":"Error type identifier."},"message":{"type":"string","description":"Human-readable error message."},"details":{"type":"array","description":"Field-level validation details.","items":{"type":"object","properties":{"field":{"type":"string"},"message":{"type":"string"}}}}}}}}}
```


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