The unique identifier of a product (raw material, sub-assembly, finished good, merchandize). Typically this is the most detailed level of the product hierarchy and it is used by most functions in a business Discuss Contract Custom Solution
"Has query" is a predefined property that represents meta information (in form of a subobject) about individual queries and is provided by Semantic MediaWiki.
"Has processing error" is a predefined property provided by Semantic MediaWiki and represents errors that appeared in connection with improper value annotations or input processing.