|| Data type (Length)
|| Indicates the start of the product data block and is mandatory as soon as product data is to be imported.
| Attribute: type
|| Defines the catalogue as full or delta load
| Condition: P_NR_EXTERNAL
|| The product number of the merchant must be present and unique. The product number is transferred within the node <P_NR> at the import, at the export the node is <P_NR_EXTERNAL>. Both are sub-elements of the <PRODUCT> node.
| Element: PRODUCT
|| If product data is to be imported, the node <PRODUCT> is mandatory, because it includes the data on one or more products. The node <PRODUCT> may occur as often as needed within the node <PRODUCTDATA>.