Where does this part belong?

Hi all,

during the revision of my Barista type F73 / 1-101 I have removed under the drive? this part and no longer know where it belongs.

This is the inside.

This cover is inside quite clean outside a little with coffee traces.
I must have removed the part somewhere under the drive during disassembly, but do not remember where
Would be nice if someone would help me.

Dear greetings
Michael

Should be the cover at the opening where the brewing unit sits. At the bottom of the housing,
Must be removed on some machines to remove the side panel on the side of the brewing unit.

Thanks for your tip,
it is obviously the insertion aid for the brew group.
I have always looked on the faksche side