EC-CS:TCode - CX50-No processing because task ManRev/Exp cannot be executed for any/all CGs/CUs

Dear Folks,

I am getting following error while trying to post in CX50 Tcode. I am using Task 2600 here for manual posting.

No processing because task ManRev/Exp cannot be executed for any/all CGs/CUs

Message no. G00095

Diagnosis

At this time task ManRev/Exp cannot be executed for any of the assigned cons groups/units, either because task ManRev/Exp itself is blocked or because the current period is already closed.

System Response

Error

Procedure

Check the assigned cons groups/units: Unblock ManRev/Exp or open the period for the affected organizational units.

Requesting your help on this.

Thanks.