SIMS registration change removes minimum pre-arrival waiting period while preserving online registration and fee-based issuance. SIMS continues to require importers to submit advance information online and obtain an automatic Registration Number on payment of the prescribed fee; the automatic Registration Number remains valid for a fixed period and the earliest permissible application timing from the expected date of arrival is retained. The amendment abolishes the prior requirement that importers apply not later than fifteen days before the expected date of arrival, removing that minimum pre-arrival lead time while leaving other operative features unchanged.