Is it possible to change the item ID of existing items in Portal for ArcGIS?

Answer

No, it is not possible to change the item ID of existing items in Portal for ArcGIS. A new item ID is assigned when a new item is created. An item ID is a unique identification for a single content item stored, managed, and accessed in Portal for ArcGIS. This item can be a file, hosted layer, or web map.

In some instances, it may be necessary to use an existing item's item ID in a new Portal for ArcGIS deployment as existing services and scripts may be dependent on the item ID. Depending on the scenario, use one of the following workarounds to replicate or restore an item:

• Use the clone_items() function in ArcGIS Python API when the old and new portals are up and running simultaneously. Refer to ArcGIS API for Python: Cloning Content for instructions.
• Migrate the content from one portal to another. Refer to Portal for ArcGIS: Migrate to new machines for more information.
• If an older version of the Portal for ArcGIS item from a backup is available, use the WebGIS DR utility to restore the portal item with the same item ID. Refer to Portal for ArcGIS: Restore ArcGIS Enterprise for instructions.
• Reupload the item in the ArcGIS Portal Directory using the Add Item operation. Refer to ArcGIS REST APIs: /addItem: Add Item for more information. For the itemIdToCreate parameter, specify a new item ID for the item before reuploading it.