E1PLOGI-OPERA is setting as U even when I am deleting data

Dear Team,

I am deleting PERNR from one HR system which will send an IDOC to another HR system and delete the same PERNR from that system as well through IDOC. But value of E1PLOGI-OPERA was getting transferred as U, which is not deleting the PERNR from other system. What could be the reason ?