An incident report is a document that records the details of an incident. An incident report typically contains the following items:
Identifier: A unique identifier for the incident report
Summary: A concise summary of the incident
Description: A detailed description of the incident, including the steps to reproduce it, the expected and actual results, and any relevant screenshots or logs
Severity: The degree of impact that the incident has on the system
Priority: The level of urgency for resolving the incident
Status: The current state of the incident, such as new, open, resolved, closed, etc.
Resolution: The action taken to resolve the incident, such as fix, workaround, reject, etc. Based on the information given in the question, the tester would be able to write down all of these items except for the test case identifier. A test case identifier is a unique identifier for a test case that is used to link it to other test artifacts, such as test plans, test scripts, test results or incident reports. However, since the tester is performing exploratory testing, there is no predefined test case that can be associated with the incident. Exploratory testing is an approach to testing that emphasizes learning, test design and test execution at the same time. Exploratory testing relies on the tester’s skills, creativity and intuition to explore the software under test and discover defects. Exploratory testing does not use formal test cases or scripts, but rather uses test charters or missions that guide the tester’s actions and objectives. Verified References: A Study Guide to the ISTQB® Foundation Level 2018 Syllabus - Springer, Chapter 3, page 32-33; Chapter 5, page 47-48.