IREB Fundamentals Practice Exam 2026 - Free IREB Practice Questions and Study Guide

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You are reading a state transition diagram and have found the following identifier: Payment received[invalid]/error message. What is the correct interpretation of this label on a transition?

Payment received is the event, invalid is the condition and error message is the action that will be taken

The label "Payment received[invalid]/error message" in a state transition diagram can be interpreted using the standard notation for events, conditions, and actions. In this case, "Payment received" clearly refers to the event that triggers the transition. This means that when a payment is received, the transition is considered, but it is accompanied by an "[invalid]" condition, which indicates that there is something wrong or not met regarding the payment received.

The presence of "error message" after the slash denotes the action that will occur as a result of this transition. Specifically, it indicates that if the payment received is invalid, an error message will be generated as part of the system’s response.

Thus, the correct interpretation places "Payment received" as the event that initiates the transition. The "[invalid]" signifies the condition under which the state change occurs, and "error message" specifies the action taken in response to the detected condition, making the answer accurate.

The error message is the event, invalid is the condition and payment received is the action that will be taken

Payment received is an invalid event at this point so an error message is the action that will be taken

This notation is incorrect for a state transition diagram