after click on save button
as per above said by you customization is configured correctly.
while posting J1IS:
GL account has not been assigned for PLAAT1 in customization
Message no. 8I447
Diagnosis
GL account has not been assigned for the excise a/c in customization
Procedure
Assign GL a/c for the excise a/c in CIN customization under : Accounting -> Assign GL accounts to excise groups and transaction types