HOW TO
Sometimes an organisation will create a new ArcGIS Online organisation. This may be because a company is opting to host data in an ArcGIS Online organisation within a new region (for example, moving from the United States or Europe to Asia-Pacific), an organisational restructuring requires a new ArcGIS Online organisation, or an organisation requires a second ArcGIS Online organisation.
The Organisation Short Name is an Organisation default setting that is used as a prefix in the organisation URL (e.g. 'Esri Testing' would make the org URL https://esritesting.maps.arcgis.com/). Each Short Name is unique - no two organisations can share the same short name, regardless of which region the org is hosted in.
The only way to use an existing Short Name in a new ArcGIS Online org is to replace the value in the existing org.
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