public PropertyValue ARTICLE_ERPNR {get; set;}

public:
property PropertyValue^ ARTICLE_ERPNR {
   PropertyValue^ get();
   void set (    PropertyValue^ value);
}

Property Value

Unique part number in an external ERP system. During entry as many characters as you wish are possible for the part ERP number, but only the first 64 characters in the UTF-8 format are identifying. If you assign a value via the Application Programming Interface you have to assign the same value for all part variants.

EPLAN reads article reference properties from function or if corresponding propoerty does not exists on function or is empty, then it is taken directly from the article. User needs to remember that setting values which removes property value for article reference property causes that they are read from article. Here is list of such values for each type: LONG - 0, STRING - empty string, BOOL - false, DOUBLE - 0.0 and for MULTILANGSTRING - empty multi lang string.

Reference

MergedArticleReferencePropertyList Class
MergedArticleReferencePropertyList Members
Overload List