SAP Message VK311 - Status "Check before releasing" already reached by Agreement &

Diagnosis You wanted to give Status 'A' (Check before releasing for settlement)to Rebate agreement &V1&. However, the rebate agreement already hasStatus &V2&. Status "Check before releasing" has already been reached. System Response The status of Rebate agreement &V1& is not changed. Procedure Check whether you have selected the correct rebate agreement.