Final Entry marked without any service entry

Dear Gurus,

I have a service PO with 2 line item, and same service number.

Service entry for the first line item has been successfully created, however when I try to create the SES for the 2nd line item I get the error "Not possible to enter services ("final entry" indicator set)".

There is no PO history for this line item. In EKPO table the Delivery completed indicator has been marked, but since delivery completed indicator field is not active in Service PO, hence this indicator has not been set manually.

Can someone please explain this behaviour, as there is not servcie entry sheet against this line item in PO, I cannot revoke the acceptance and reset the Final entry indicator.

Please share your thoughts.

Regards

Vinay