getByOrderItemAttribute

<item>
  <pos-number></pos-number>
  <pos-sub-number></pos-sub-number>
  <distribution-article-number></distribution-article-number>
  <distribution-article-number-external></distribution-article-number-external>
  <distribution-article-description1></distribution-article-description1>
  <distribution-article-description2></distribution-article-description2>
  <distribution-article-ean></distribution-article-ean>
  <article-type></article-type>
  <object-number></object-number>
  <date-of-release-invoice></date-of-release-invoice>
  <width></width>
  <length></length>
  <purchase-order-quantity></purchase-order-quantity>
  <quantity-delivered></quantity-delivered>
  <sales-price-brutto></sales-price-brutto>
  <sales-price-brutto-total></sales-price-brutto-total>
  <sales-price-netto></sales-price-netto>
  <sales-price-netto-total></sales-price-netto-total>
  <extra-pay-discount-rate></extra-pay-discount-rate>
  <extra-pay-discount-amount></extra-pay-discount-amount>
  <extra-pay-discount-amount-total></extra-pay-discount-amount-total>
  <delivery-code></delivery-code>
  <set-code></set-code>
  <supplement-tag></supplement-tag>
  <special-price-tag></special-price-tag>
  <normal-price-tag></normal-price-tag>
  <free-of-charge-tag></free-of-charge-tag>
  <extra-pay-discount-tag></extra-pay-discount-tag>
  <cancellation-tag></cancellation-tag>
  <substitute-tag></ substitute-tag>
  <delivery-state></delivery-state>
  <invoice-number></invoice-number>
  <invoice-type></invoice-type>
  <date-of-purchase-order-client></date-of-purchase-order-client>
  <date-of-purchase-order-system></date-of-purchase-order-system>
  <date-of-invoice></date-of-invoice>
  <date-of-backlog></date-of-backlog>
  <scan-status></scan-status>
  <timestamp-of-last-modification></timestamp-of-last-modification>
  <package-info>
    <consignment-number></consignment-number>
    <package-number></package-number>
    <receipt-number></receipt-number>
    <receipt-type></receipt-type>
    <cut></cut>
    <leading-code></leading-code>
    <track-status></track-status>
    <track-status-date></track-status-date>
    <track-depot-number></track-depot-number>
    <delivery-date></delivery-date>
    <vers-weg></vers-weg>
    <scan-status></scan-status>
    <scan-status-date></scan-status-date>
  </package-info>
  <!—- up to 30 item additions -->
  <item-addition>
    <item-addition-text></item-addition-text>
    <item-addition-purpose></item-addition-purpose>
  </item-addition>
</item>

Important note:
The field length in brackets are valid for VHS/3 standalone. VHS/3 supports longer values in several fields.