A Jira administrator revoked the "Administer projects" permission for Priya in the project is correct.

The most likely reason is that editing issue layouts in a company managed project is a project administration task and it is controlled by the "Administer projects" permission. When that permission is removed a user loses the ability to change project configuration items such as issue layouts, which explains why Priya could change layouts earlier and now cannot update the layout for a specific issue type.

An issue security scheme is preventing Priya from changing the issue layout is incorrect because issue security schemes govern who can view or access individual issues and they do not control the project configuration screens used to edit issue layouts.

The project permission named "Edit issues layout" was removed from Priya is incorrect because there is not a distinct permission named "Edit issues layout" in standard Jira permission schemes. Layout editing is covered by project administration rights instead.

The ability to change settings for that particular issue type was taken away from Priya is incorrect because issue type settings and the layout configuration are managed at the project administration level rather than by a separate per issue type permission. Removing project admin rights would produce the observed loss of access.

Priya was removed as the project lead of the "NovaCo" project is incorrect because the project lead role mainly affects defaults and notifications and does not by itself remove project administration permissions unless the underlying permission was explicitly changed.

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