Nop.Web\Administration\Views\Discount\_CreateOrUpdate.cshtml
Предлагаю локализовать:
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<div>@T("Admin.Promotions.Discounts.Requirements.DiscountRequirementType"): <b>{{= ruleName }}</b></div>
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<button type="button" name="deleterequirement{{= discountRequirementId }}" id="deleterequirement{{= discountRequirementId }}" onclick="deleteRequirement({{= discountRequirementId }})" class="t-button">@T("Admin.Promotions.Discounts.Requirements.Remove")</button>
И соответственно добавить:
Admin.Promotions.Discounts.Requirements.Remove = "Remove Requirement"