The issue can be found in the following documentation, wiki-markdown file.
As i was doing a flow-chart diagram for the project, I noticed that there are screens, which have not been documented by this document. My flowchart can be seen here:

What I noticed is that a lot of the TAN/QR screens are not documented at the given markup, which i find problematic.
Add the screens in the documentation.
Internal Tracking ID: EXPOSUREAPP-2962
Dear @kraleva this is not a bug, as the UI screens document was intended to mostly give a glimpse into the available screens. I'll add the enhancement label and clarify with the UX team whether more screens can be provided.
UI screenshots are now automatically generated for the current release and posted to https://www.coronawarn.app/en/screenshots/ including sections on:
In the issue https://github.com/corona-warn-app/cwa-documentation/issues/508 there is a discussion about whether to keep or replace the original UI screen shots listed in https://github.com/corona-warn-app/cwa-documentation/blob/master/ui_screens.md.
Most helpful comment
UI screenshots are now automatically generated for the current release and posted to https://www.coronawarn.app/en/screenshots/ including sections on:
In the issue https://github.com/corona-warn-app/cwa-documentation/issues/508 there is a discussion about whether to keep or replace the original UI screen shots listed in https://github.com/corona-warn-app/cwa-documentation/blob/master/ui_screens.md.