Cost center not displayed in GL line item display

Hello Everyone,

I am facing an issue, the scenario is described as below :-

GL line item display in FAGLL03 doesn't display the cost center. I checked the documents in the line items in FB03, and found that in the Entry view, the cost center is reflecting whereas in the GL view the cost center is not reflecting.

I also, checked the cost center master data and found that the cost center is a 'Plan Revenue' (in Control tab). Furthermore, I checked the SAP note 964686, and as per that I checked the table COEP, value type field is '11' which indicates it should be a statistical posting.

My query is that if this is a statistical posting, then why is there only a cost center in the FI document. Why is there no WBS or internal order/profitability segment. As you may see in the below screenshot, the profitability segment is greyed out.

Kindly provide a solution.

Thanks !