Purchase Order Form Hangs When Approving Purchase Order

Hi Team,

We are in R12.2.4 , Purchase Requisition and Purchase Order Form Hangs When Approving Purchase Order. After Clicking Approve Button, Approve Document window opens , after clicking on Ok button then Form gets hang. we waited till 30 mins but still form no use. Even we did not received any Error message.

This Issue is for ALL POs.

Regards,

Kishore Kumar