Offer period limits for public offers of securitised debt instruments: regulatory rule sets minimum and maximum subscription windows. Regulation 29 requires that a public offer of securitised debt instruments remain open for not less than two working days and not more than ten working days, setting a mandatory minimum and maximum subscription window under the Issue and Listing of Securitised Debt Instruments and Security Receipts Regulations, 2008; the provision was amended to reduce the prior maximum offer duration.