```ruby
# frozen_string_literal: true

module SolidusAvataxCertified
  module Request
    class GetTax < SolidusAvataxCertified::Request::Base
      def generate
        promotion_discount = order.all_adjustments.promotion.eligible.sum(:amount).abs
        manual_discount = order.all_adjustments.where(source: nil).eligible.sum(:amount).abs

        {
          createTransactionModel: {
            code: order.number,
            date: doc_date,
            discount: (promotion_discount + manual_discount).to_s,
            commit: @commit,
            type: @doc_type || 'SalesOrder',
            lines: sales_lines
          }.merge(base_tax_hash)
        }
      end

      protected

      def doc_date
        order.completed? ? order.completed_at.strftime('%F') : Date.today.strftime('%F')
      end
    end
  end
end
```

Fix positive amount adjustments being considered as discounts
user
```ruby
# frozen_string_literal: true

module SolidusAvataxCertified
  module Request
    class GetTax < SolidusAvataxCertified::Request::Base
      def generate
        promotion_discount = order.all_adjustments.promotion.eligible.sum(:amount).abs
        manual_discount = order.all_adjustments.where('amount < 0').where(source: nil).eligible.sum(:amount).abs

        {
          createTransactionModel: {
            code: order.number,
            date: doc_date,
            discount: (promotion_discount + manual_discount).to_s,
            commit: @commit,
            type: @doc_type || 'SalesOrder',
            lines: sales_lines
          }.merge(base_tax_hash)
        }
      end

      protected

      def doc_date
        order.completed? ? order.completed_at.strftime('%F') : Date.today.strftime('%F')
      end
    end
  end
end
```
assistant