KB31N LSMW Isssue

Good day,

I have an issue when I run KB31N through LSMW and run it the
background. I get a transaction error saying "Field RK23F-STAGR. does
not exist in the screen SAPLK23F1 1200
Field RK23F-MBGBTR. does not exist in the screen SAPLK23F1 1200
Field RK23F-SGTXT. does not exist in the screen SAPLK23F1 1200
Field RK23F-EKOSTL. does not exist in the screen SAPLK23F1 1200", but
when I run it on the foreground or display error only option. it goes
through successfully.

See attached the recording done in sm35 as proof that those fields
exist. I did simulate the recording in the background and yes those
fields exist.

We are on SAPKH60604 support pack.

Kindly check and coming back to me.

Thanks,
Themba