> For the complete documentation index, see [llms.txt](https://developer.collibra.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.collibra.com/api/guides/import-api/synchronization/changing-and-restoring-the-status-of-externally-missing-resources.md).

# Changing and restoring the status of externally missing resources

When doing a synchronization, the `finalizationStrategy` parameter determines how to manage the assets that no longer exist in the external system.

The `finalizationStrategy` parameter accepts these possible values:

* `REMOVE_RESOURCES` is the default value and deletes the missing resources in Collibra.
* `CHANGE_STATUS` changes the status of the missing resources in Collibra to the corresponding ID from the `missingAssetStatusId` parameter. When you set the `finalizationStrategy` to `CHANGE_STATUS`, you must also provide a value for `missingAssetStatusId`.
* `IGNORE` ignores missing assets and leaves them as is.

## Change the status

To change the status of an externally missing resource instead of deleting it, set the following parameters for a full synchronization or for the finalization step of a batch synchronization:

* `finalizationStrategy=CHANGE_STATUS`.
* `missingAssetStatusId=“<desired_status_id>“`.

<i class="fa-chevrons-right">:chevrons-right:</i> When the finalization completes, the resources that are missing from the external system have a new status in Collibra matching the one provided in `missingAssetStatusId`.

## Restore the status

To restore the status of a resource that was previously missing but reappeared in the external system, set the following parameters for a full synchronization or for the finalization step of a batch synchronization::

* `finalizationStrategy=CHANGE_STATUS`.
* `missingAssetStatusId=“<desired_status_id>“`.

<i class="fa-chevrons-right">:chevrons-right:</i> The resources that are restored no longer have a status matching the one provided in `missingAssetStatusId` and return to the default status for that asset type in Collibra.