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If there is an occurrence category that will no longer be used, we can inactivate it.

You must have permission to Manage cause types, categories and classifications.

In the event module click on the Categories tab.

In the category of the event that will be inactivated click on the context menu and select the Inactivate option.

The occurrence category will be inactivated.
To find the categories of inactive occurrences use the filter .

Inactive categories are no longer displayed in the list for selection, occurrences that use this category do not change.