Solution : https://service.sap.com/sap/support/notes/939181 (SAP Service marketplace login required)
Key words : 
attached source code corrections, customer-specific standard analyses, sap standard analyses, fewer periods exist, fiscal year variant, shortened fiscal year, fiscal year, 'year-dependent', system displays, inventory controlling
Related Notes : 
       
| 672255 | Shortened fiscal year/changing fiscal periods |