Some manufacturers specify Retest date not expiry date on API containers. e.g. they specify Retest date 2 years after the manufacturing date (Mfg date Oct 2019 and Retest date Sept 2021). Now when we receive this material, suppose already 1 or 2 months already gone in transit and our FP shelf life is 2 years. In this case, if we use this API can we specify 2 year expiry on our product with Mfg date Dec 2019 & Expiry date Nov 2021.