If the discontinued (obsolete or imperfect) Version of Product Structure should be reworked for the following usage, then first of all the Status of such Product Structure should be changed from "Discontinued" to the initial "Draft" value, because any changes are prohibited for the discontinued Product Structure. The Status of discontinued Product Structure can be reverted back to Draft directly from "Product Structure" details form or from the list of existing Product Structures. In the last case, the Statuses of more than one Product Structure can be reverted back to Draft at the same time.