Message SAP WV_FP043 - Group reference article is not defined

Diagnosis
No reference article has been defined for the reference article. However
, a reference article is needed to carry out pricing.

System Response
Activation of the family was canceled.

Procedure
Under "article" on the tab header for the incorrect group select anarticle. In change mode press the button "Define reference article". Ineach case the reference article is displayed above the article list onthe tab header "article".