SAP Message >0200 - Posting period &1 &2 for company code &3 already closed

Diagnosis
The desired posting period is already closed or has not yet beenopened.

System Response
Error message

Procedure
Check the posting date. If this is correct, check that the period &V1&V2 is permitted for company code v3 as well as for account type "+"(general opened periods) and for account type "V" (opened periods forcontract accounts receivable and payable).