Conveyance system and conveyance method

A conveyance system comprising:

• a plurality of devices configured to perform predetermined processing on an article;
• a conveyance robot;
• and
• an instruction unit,
• wherein an instrument of a type arbitrarily selected from a plurality of types of instruments is installed in each of the plurality of devices,
• the predetermined processing is performed using the installed instrument in each of the plurality of devices, and
• the instruction unit includes:
• a first acquisition unit configured to acquire first identification information identifying a type of a conveyance target article;
• a second acquisition unit configured to acquire second identification information identifying a type of the instrument installed in each of the plurality of devices;
• a specification unit configured to specify the type of the instrument associated with the type identified by the first identification information using association information associating the type of the article with the type of the instrument performing the predetermined processing on the article of the type;
• a selection unit configured to select a device in which the instrument of the specified type is installed as a target device among the plurality of devices using the second identification information;
• and
• a first output unit configured to output, to the conveyance robot, a conveyance instruction to convey the conveyance target article to the target device.