The following fields can be used for product grouping: GR1, GR2, GR3 & Code. The field values in GR1, GR2 and Code in ART are copied to several transaction documents, both purchase and customer documents. This enables filtering on these values in several applications for example Purchase (PUR), Supplier Backlog Management (SBM) Goods in (GIN), Sales order item (COAITEM) and in several reports.The fields GR1, GR2 & GR3 are free text fields, whereas Code is picked from a predefined list in created in the WGR builder. GR3 is not copied to transaction documents but is a free text field on .