System and device with selection of image formation when embedded data cannot be written in a storing part on a print medium

An image-forming system comprising:

• a transmission device comprising a transmitting unit configured to transmit image data, command data instructing to form an image corresponding to the image data on a recording medium having a storing part and to write embedded data to the storing part, and first selection data indicating whether or not the image should be formed when the embedded data cannot be written in the storing part;
• and
• an image-forming device comprising:
• a receiving unit configured to receive the image data, the command data and the first selection data;
• an image-forming unit capable of forming the image on the recording medium in accordance with the image data and the command data, and capable of writing embedded data in the storing unit in accordance with the command data;
• and
• a controlling unit configured to control, when the image-forming unit cannot write the embedded data in the storing unit, the image-forming unit to form the image if the first selection data indicates that the image should be formed, and to fail to form the image if the first selection data indicates that the image should not be formed.