What is the expiration date of a preparation (Gelulen) that is refunded but the formula does not appear in the TMF?

In the TMF state: the expiry date of most of the preparations provided in the TMF is limited to 2 months. If I read the article from the Pharmaceutical Journal for Belgium (2010 by N. Duquet) Also on your site listed with Table I find: gel shelf life for non validated formulas: 6 months, for formulas from FN, FMS except if different Listed: 1 year. What expiry date should we note on a magistal preparation of capsules that are not mentioned in the TMF.