Issue Summary

This is reproducible on Data Center: (yes)

Steps to Reproduce

1. Switch Confluence DC to read only maintenance mode
2. Attempt to run the invalid emails step in CCMA

Expected Results

• Invalid and duplicated emails step in CCMA runs successfully

Actual Results

• Invalid and duplicated emails step in CCMA fails

The below exception is thrown in the atlassian-confluence.log file:

2024-12-14 02:14:24,918 ERROR [http-nio-8090-exec-1280] [common.error.jersey.ThrowableExceptionMapper] toResponse Uncaught exception 6625477b-fd5f-49e0-af6f-3f07dbd0132b thrown by REST service: null
 -- url: /rest/migration/latest/userbase/scan/... | userName: localadmin | referer: ... | traceId: ...
com.atlassian.confluence.api.service.exceptions.ReadOnlyException
        at com.atlassian.confluence.plugins.restapi.filters.ReadOnlyAccessRequestFilter.filter(ReadOnlyAccessRequestFilter.java:75)
      

Workaround

No valid workaround - the only workaround in this case is to disable maintenance, assess the invalid and duplicate emails, and turn maintenance read only mode back on.