What is the indicator needs to give to undo the deletion flag for N number of PO's in MASS

Hello,

Unfortunately, I have marked the deletion flag for 11000 PO's for all the line items in PO.

But, I realized that we need to flag the deletion flag only for specific line items in the PO's not for all the items.

So, now I have tried to reset the deletion flag in MASS gving only blanks for LOEKZ.

But, after execution I am getting the message as No data changed.

Can anybody say what is the exact indicator in MASS for undelete the PO's.

Thanks for your reply.

Thanks,

Satya