Issue in LSMW for MEK2

Dear friends,

I want to add a different a Freight Vendor in the condition record via MEK2, as shown in the attachment. I'm trying to do it via Batch Input Recording of LSMW, as it is a mass update- 13000 line items. The Freight Vendor (second vendor) is highlighted in the screen-shot of MEK2 in the attachment.

err-in-mek2-may-26-jpg.jpg

But I'm facing an issue. The second vendor field is not getting captured in the recording.

When I try to use Std. Batch/ Direct Input method, then I get err- "Name 'LIFNR' already in use. Choose another name."

Can you pl let me know what mistake I'm doing?

Thanks a lot!

R.Sgr