In a system sequence diagram the order of the messages is determined by numbering the messages.

Question

In a system sequence diagram the order of the messages is determined by numbering the messages.​

Quizplus · Accepted Answer

The order of the messages in a system sequence diagram is not determined by numbering the messages. The messages are typically arranged in a chronological order, based on when they occur in the sequence of interactions between the system and outside actors. The diagram may also show any conditions or parameters associated with each message, as well as the responses or outcomes generated by the system in response to each message.

In a System Sequence Diagram the Order of the Messages