Notice reply under rule 164(8): standardized response with enclosures and verification to address FORM GST SPL-03 notice. Reply to a notice under rule 164(8) is effected through FORM GST SPL-04, which captures respondent identity, reference to FORM GST SPL-03, a concise reply, and enumerated enclosures such as payment proof or additional submissions. The form requires a verification declaration sworn by an authorised signatory with name, designation and date and includes fields for the Proper Officer and jurisdiction to ensure procedural compliance.