Solution : https://service.sap.com/sap/support/notes/1025605 (SAP Service marketplace login required)
Key words : 
receive error message fagl_ledger_cust 063, double-digit period counter, fiscal year variant, ledger-specific posting, document header depends, day ledger reason, directly ledger-specifically, dummy newgl ledger, technical ledger group, dummy ledger group
Related Notes : 
       
| 672255 | Shortened fiscal year/changing fiscal periods |