Circutor Raption 150C Series Instruction Manual page 30

Raption 150C
The user cannot use this connector because another user is
already using it.
This connector has been reserved and only will be able to use per
the user that has made the reserve.
Note: if the user that has reserved the Charge Point is yourself
the charging session will start normally, if not, the Charge Point
will not be able to charge until the date and time displayed have
expired.
Applies when simultaneous charge is not available. In case, one
connector is booked or already in use.
30 Instruction Manual