Billing / Retrun error

Dear All,

When we go to VF02 , give billing doc and then document flow, account document status is coming ( clear, notclear,block) ....

so kindlly suggest me how can i clear Accounting Document 2817 -

Even Retruns also open

Regards

Pritpoal

Doc. Date Overall P

.. Standard Order- ITML 6005983 29.02.08 Completed

. Outbound Delivery 80017479 29.02.08 Completed

Invoice 4580 29.02.08 Completed

. Accounting document 2817 29.02.08 Not clear

. Returns 60002286 11.07.08 Open

.. Credit for Returns 267107 11.07.08 Completed

... Accounting document 267107 11.07.08 Cleared

.. Cancel of Cred Memo 275410 14.07.08 Completed

... Accounting document 8500000098 14.07.08 Cleared

. Returns 60002289 14.07.08 Open