We are reclassifying some items (MMS130) to update their expiration dates. One of the products will expire in 2028, however the expiration date is invalid, as seen below.
We tried inputting the date and selecting it from the calendar (both yielded the same problem).

I examined the system calendar open (CRS900) and system calendar open days (CRS905), both of which are already present.
What might be causing this issue?