Batch expired materials to blocked stock

Hi All,

I need to have a batch job which converts expired batches into blocked stock.

We use WM here.

1. In IM, which is the tcode to set up a batch job for converting expired batches to blocked automatically?

2. In WM< which is the tcode for this?

3. IM tcode or WM tcode , which one would be best practice to use?

Please advice.

Thanks,