As an end user of Jira, I want to search for Issues on the basis of a string of numbers, e.g. 123. There are likely Issues captured in Jira that may have an identifier that is not specifically captured in a structured field. So, I might have Defect 123 that is captured as text within the Description or other field. But it might also have been described as Bug123. I want to search "123" in Jira and find this item, even though it is identified (unique Jira ID) as JIRAPROJECT-456.