# Catalog – Object group detail

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The object group detail page is an extension of the object detail page.

An object is related to others through their belonging to a versioning collision group, thus establishing which objects really are different versions of the same element.

General access to the group detail is through the links in the object group ‘browse and search’ pages, as well as with the group link that is shown in the General information of an object’s detail page.

![](https://1027461619-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MjAMV2uTheGBDHeGhtb%2F-MjZ47iSHA_UouVcKpm5%2F-MjZ4ikZZkMJ2G0PA7yI%2Fimage.png?alt=media\&token=0ba64678-2d47-4bf7-af41-8df3d223e38a)

The object group page allows seeing the objects that are related, and easily getting all information details for each one of them, avoiding the need to browse different windows.

The display is similar to the object detail pages, but each section is repeated for each one of the related versions. When clicking on the name icon for each version, its sections will be automatically expanded for an easier navigation.

![](https://1027461619-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MjAMV2uTheGBDHeGhtb%2F-MjZ47iSHA_UouVcKpm5%2F-MjZ4r6k8e5HpGmH48ma%2Fimage.png?alt=media\&token=7a71360e-2c67-4ea3-903c-e06ba0f78f12)

The following considerations on an object group may be of interest:

* The different versions that were generated by a user in ingestion jobs may be placed in different preservation areas and/or under different preservation plans. This implies that they can also have different associated metadata schemas.
* If they were ingested under different preservation plans, the use of a different set of sanitizers and checks may have established a different quality level for the ingestion.
* Depending on the preservation plans, the number of copies of each object may differ.
* Internal versions, those generated by dataformat evolutions, will have the same metadata schema as the external object from which they come.
