When you create a new silo under sitecore → Media Library → Digizuite, the item gets a unique Item ID. This ID is used to generate all items itemId, when synchronizing the silo against Digizuite™ DAM.

The silo is a bucket containing all the assets available from Digizuite™ DAM, represented as an item and the ItemId for each item is calculated from this formula: AssetId + Silo ItemId.
This means that the itemId is always the same, for a specific asset, when its being deleted and synchronized again.

The silo configuration located at sitecore → System → Modules → Digizuite → MetaDataRoot_0, has the same logic as above around generating the ItemId.

If you are working multiple developers together, then you have to make sure that every one has a silo item with the same itemId. Then when every developer synchronizes the silo, all the items + configurations has the same itemId between developers.