# IRPCObjectOperations.DestroyObjectVersionsByConditions

Location: [gRPC API](https://developer.m-files.com/APIs/gRPC-API/index.md) > [Vault API](https://developer.m-files.com/APIs/gRPC-API/vault/index.md) > [Objects, versions, properties and files](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCObjectOperations/index.md)

HTML version: https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCObjectOperations/DestroyObjectVersionsByConditions/

Badges: `Vault API / core` `write` `session or assertion` `returns metadata structure version`

Destroys the old versions of an object that match search conditions, and returns how many were
destroyed.

- **Service:** [Objects, versions, properties and files](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCObjectOperations/index.md) `MFiles.IRPCObjectOperations`
- **gRPC method:** `/MFiles.IRPCObjectOperations/DestroyObjectVersionsByConditions`
- **HTTP (mf-http-grpc):** `POST /grpc/v1/destroy-object-versions-by-conditions`
- **Request:** [`DestroyObjectVersionsByConditionsRequest`](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCObjectOperations/DestroyObjectVersionsByConditions/index.md#request)
- **Response:** [`DestroyObjectVersionsByConditionsResponse`](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCObjectOperations/DestroyObjectVersionsByConditions/index.md#response)
- **Book and level:** Vault API, core
- **Kind:** write
- **Session:** Required: a session (mfiles-session-id-bin metadata) or a session assertion (x-mf-session-assertion metadata).
- **Idempotent:** no
- **Returns metadata structure version:** yes (in the mfiles-metadata-version-bin trailer)
- **Streaming:** none (unary)

<a id="remarks"></a>

## Remarks

The newest version is never destroyed, and when the object is checked out both the checked-out
version and the latest checked-in version are kept, whoever has the object checked out; conditions
cannot override this. `conditions` must not be empty. Check a condition set first with
[CountObjectVersionsMatchingConditions](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCObjectOperations/CountObjectVersionsMatchingConditions/index.md):
destruction cannot be undone. If `more_versions_remain` is true, call again. Requires the
vault-level right to destroy objects. Not available on servers where the feature is not enabled
(the call fails with not implemented).

<a id="request"></a>

## Request: DestroyObjectVersionsByConditionsRequest

The request of DestroyObjectVersionsByConditions: the object and the conditions a version must
match to be destroyed. The conditions only select candidates: the newest version, and for a
checked-out object the checked-out version and the latest checked-in version, are always kept.

> Nested message fields are expanded to depth 3; follow a type link for deeper levels and for the type's own page.

| Field | Type | Description |
|---|---|---|
| `obj_id` | [`ObjID`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ObjID/index.md) | The object whose versions are destroyed. |
| `obj_id.type` | `int32` | The object type ID, for example 0 for documents. In a lookup value, the value list ID (for a lookup to objects, the object type ID). |
| `obj_id.item_id` | [`ItemID`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ItemID/index.md) | The ID of the object within its type, in `item_id.internal_id`. |
| `obj_id.item_id.internal_id` | `int32` | The ID of the object or value list item. |
| `obj_id.item_id.external_repository_id` | [`ExternalRepositoryID`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ExternalRepositoryID/index.md) | Used only for objects in external repositories (external connectors). Leave it unset for objects stored in the vault. |
| `conditions[]` | repeated [`SearchCondition`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.SearchCondition/index.md) | The conditions a version must match to be destroyed. Must not be empty. |
| `conditions[].expression` | [`Expression`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.Expression/index.md) | The left side of the condition: what is evaluated for each object, such as a property value, a status value or any field (full-text search). |
| `conditions[].expression.type` | [`ExpressionType`](https://developer.m-files.com/APIs/gRPC-API/Reference/Enums/MFiles.ExpressionType/index.md) | The kind of expression. Must match the member set in `data`. Values: `EXPRESSION_TYPE_UNINITIALIZED` (0), `EXPRESSION_TYPE_PROPERTY_VALUE` (1), `EXPRESSION_TYPE_ID_SEGMENT` (2), `EXPRESSION_TYPE_STATUS_VALUE` (3), `EXPRESSION_TYPE_FILE_VALUE` (4), `EXPRESSION_TYPE_TYPED_VALUE` (5), `EXPRESSION_TYPE_ANY_FIELD` (6), `EXPRESSION_TYPE_PERMISSIONS` (7). |
| `conditions[].expression.data` | [`ExpressionUnion`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ExpressionUnion/index.md) | The expression data. Set the member that matches `type`. |
| `conditions[].expression.indirection_levels[]` | repeated [`IndirectionLevel`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.IndirectionLevel/index.md) | The lookups to follow before evaluating the expression, from the searched object outwards. Empty evaluates the expression on the object itself. |
| `conditions[].type` | [`ConditionType`](https://developer.m-files.com/APIs/gRPC-API/Reference/Enums/MFiles.ConditionType/index.md) | The comparison operator. |
| `conditions[].value` | [`TypedValue`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.TypedValue/index.md) | The right side of the condition: the value to compare with. Its data type must suit the expression, for example a lookup for a lookup property, Boolean for `STATUS_TYPE_IS_DELETED`. |
| `conditions[].value.is_null_value` | `bool` | True if the value is empty. `data` is then unset. |
| `conditions[].value.type` | [`Datatype`](https://developer.m-files.com/APIs/gRPC-API/Reference/Enums/MFiles.Datatype/index.md) | The data type of the value. |
| `conditions[].value.data` | [`TypedValueUnion`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.TypedValueUnion/index.md) | The value, in the member that matches `type`. Unset for an empty value. |
| `max_versions_to_destroy` | `int32` | The most versions this call destroys. Zero or less means no limit, so set a limit deliberately. |

<a id="response"></a>

## Response: DestroyObjectVersionsByConditionsResponse

The response of DestroyObjectVersionsByConditions: the number of versions destroyed, and whether
more matching versions remain.

> Nested message fields are expanded to depth 3; follow a type link for deeper levels and for the type's own page.

| Field | Type | Description |
|---|---|---|
| `destroyed_version_count` | `int32` | The number of versions destroyed by this call. |
| `more_versions_remain` | `bool` | True if more matching versions remained; call again to continue. |

<a id="related"></a>

## Related methods

- [CountObjectVersionsMatchingConditions](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCObjectOperations/CountObjectVersionsMatchingConditions/index.md): Counts the versions of an object that DestroyObjectVersionsByConditions would destroy with the same inputs, without destroying anything.
- [DestroyObject](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCObjectOperations/DestroyObject/index.md): Permanently destroys an object, or one version of it.
- [DestroyObjectVersions](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCObjectOperations/DestroyObjectVersions/index.md): Permanently destroys specific object versions.