Para 42 says 'wherever applicable'. If the section genuinely has no active fax number, it may be omitted. However, email is now essential and must always be included.
Source: CSMOP Para 42
Is it mandatory to include a fax number even if the Section no longer uses fax?
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This answer is for informational purposes only and does not constitute legal advice. Always refer to the original rules and consult competent authorities for official interpretation.