No Accounting Entry Generated for Order SES

Hi All,

We have created a Service PO through PR that is being charged to an Maintenance Order. The SES has been created and approved with the Material Document created but no accounting entry is generated. The GR non-valuated is unchecked.

As our Sandbox was just refreshed, I copied the and created a new PO from the old one and created an SES and the accounting entries were generated. Any ideas why this is happening?

Thanks