Control apparatus and control method

A computer-implemented control method comprising:

• in response to reception of a first message, by referring to a reception history of one or more messages received prior to the received first message, determining whether a second message having a second timestamp newer than a first timestamp of the received first message has been received;
• when the second message has been received, performing a first process on the first message and a second process on the second message in order indicated by the first timestamp and the second timestamp;
• and
• transmitting, to an apparatus to which the first message is transmitted next, a first correction notification including an instruction to correct order of processes executed by the apparatus with respect to the first message and the second message.

A non-transitory computer-readable medium storing instructions executable by one or more computer, the instructions for comprising:

• one or more instructions for determining, in response to reception of a first message, by referring to a reception history of one or more messages received prior to the received first message, whether a second message having a second timestamp newer than a first timestamp of the received first message has been received;
• one or more instructions for performing, when the second message has been received, a first process on the first message and a second process on the second message in order indicated by the first timestamp and the second timestamp;
• and
• one or more instructions for transmitting, to an apparatus to which the first message is transmitted next, a first correction notification including an instruction to correct order of processes executed by the apparatus with respect to the first message and the second message.