Derived ER configuration Error

Hello,

I have Payment model which ER model under which I have ISO20022 credit transfer

I have created new configuration from ISO20022 and removed all existing file roots because I wanted to generate csv file from scratch.

When I removed everything and added file root with extension of csv
but I am getting below errors…

Please suggest if any

File ERCoveringLetter.xlsx is linked to no file components and will be removed after changing status of configuration version.

File ERAttendingNoteReport.xlsx is linked to no file components and will be removed after changing status of configuration version.

File ERControlReport.xlsx is linked to no file components and will be removed after changing status of configuration version.