Canon EOS REBEL T7I Wi-Fi (Wireless Communication) Function Instruction Manual page 148

Responding to Error Messages
105: Could not receive files. Card's write protect switch is
set to lock
Is the card in the camera to receive data locked?

Check the card in the camera to receive data. Release the lock,

then try sending the data again.
106: Could not receive files. Folder and file number have
reached maximum value
Check if the folder number of the camera to receive data is

999 and the file number 9999.
Folder or file names cannot be created automatically. Replace the

card in the camera to receive data, then try sending the data again.
107: Could not receive files. Card cannot be accessed
Is the card working properly?

Replace the card in the camera to receive data, then try sending

the data again.
108: Disconnected
Has the target camera terminated the connection?

Check the communication status and re-establish the Wi-Fi

connection between the cameras.
109: An error has occurred
A problem other than error code number 101 to 108 occurred

while the cameras are connected to each other.
Re-establish the Wi-Fi connection between the cameras.

121: Not enough free space on server
The target Web server does not have enough free space.

Delete unnecessary images on the Web server, check the free

space on the Web server, then try sending the data again.
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