I found that the system notification that an audio file storage space on the server is full so the IMR systems to remove old audio system is only for current file storage space.
The system alerts the space to store audio files on a server full system IMR and thus remove old files to make the system disk space for storing the current file.
It is found that the system notification area holds the audio files on the server full system IMR thus delete old audio files to provide space for storage system only the current file.