Field property change in a Table that is replicated to HANA through SLT

Hi Experts,

I have a requirement as below.

1. One Z table of ECC is SLT'd into to HANA.

2. It has a Z filed that needs a change in its field length from 4 to 2.

3. Currently this particular Z field is not SLT'd into HANA as there is no modelling requirement.

So what set of activities need to be followed to perform this?? OR this requirement won't impact as far as SLT & HANA are considered...

Please suggest.

Thanks,

Biswamber