Error: UKM_PI 008

Hello Gurus,

Here is my scenario:

1. i have a PO line item that i want to delete

2. when i try to delete the line item i am receiving an error "No update in sales order xxx from purchase order (error UKM_PI 008)"

this is the first time i have encountered this error.

Please help me find the solution to this error.

Thanks in advance for your help.

Jazper