Solution : https://service.sap.com/sap/support/notes/413154 (SAP Service marketplace login required)
Key words : 
period additional key words standard variant, billingsdd1    duplicate sales documents, deliveryv23    sd documents blocked, user-specific display variants, distribution documents blocked, change standard layouts, 00    incomplete sd documentsv, user-specific layouts, 02    incomplete sales ordersv, 06    incomplete contractsva14l  sales
Related Notes : 
       
| 413511 | Authorizations for variant maintenance in ALV I |