Below also is valid for re-inspection time and sales time.

MMS001/F shows expiration date method.

If shelf life is updated, it will be updated for all warehouses if expiration date method = 4.

It can be updated separately per warehouse, if expiration date method = 2.

If shelf life is updated, it will be updated for all warehouses if expiration date method = 3.

It can be updated separately per warehouse, if expiration date method = 1.

See further below for more details from M3 help text.