Close WBSE via IDocs in SAP

Dear Expert,

We tried closing WBSE via IDocs, the segment we used is Project Definition and Object status with Message Type: PROJECT01 to update JEST table with I0046 status. However the Idocs is getting posted successfully, no error message but JEST table doesnt get updated nor WBSE is closed.

Appreciate if you can advise, whether we are using correct Message type or Segment to close the WBSE.

How do we go ahead and close the WBSE via IDocs.