Clarify ENQUIRY.LEVEL, OFS.UNIQUE.MSG.REF,..

F.ENQUIRY.LEVEL
- Temporary storage for enquiry data
There might be one record per login%enquiry_company_user:level which might fill the file - but not indefinite.
Its save to delete records for user which are not currently logged on.

F.OFS.UNIQUE.MSG.REF
- OFS duplicate checks
The file should be kept up-to-date by the system itself, normally no need to delete record manually.

F.OFS.REQUEST.DETAIL
- Message Logging for OFS
"A logging facility is provided for all messages for a particular service. This can log all traffic, exception messages, communication start and end or no messages. Full history of each message can be recorded if required. The details are stored in the OFS.REQUEST.DETAIL file if message audit is required. If message auditing is required, full details of the message and subsequent processing statuses will be recorded. Message logging is configured in OFS.SOURCE."
You should have housekeeping in place for this file, e.g. delete each record older than 5 workingdays.