Selection of a particular Role is not available when adding a new column to Tabular View in Vault Library
The role the user is trying to add is a custom role in the given lifecycle and not a standard one such as: Viewer, etc.
This behavior is working as designed. For performance reasons, custom roles are not available as columns in the Tabular View of the document Library. Note: custom roles are available in Reports where they can be added as filters or columns.
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