CAN'T DO DELETION FLAG FOR JOB ORDER

hello,

somebody can help me regarding this method.

I cant do deletion flag for CO02 production order in CO02 with below error log:

Balance of  "production order reference no." no zero

There is still WIP for "production order reference no."

"production order reference no." : WIP in Financial Accounting is still to be cleared/settled.

"production order reference no." : purchase order still exist

Please guide me on this

Thanks