Material Master fields in AFS SAP

Hi,

We have AFS functionality.

As of today, we are not using the MARA table fields COLOR_ATINN, SIZE1_ATINN, SIZE2_ATINN.

We are planning to use these fields in future. But, not sure where these fields appear in material master.

I did not see any fields are in Hide mode.

How to update these fields and where?

Please help me on this.

Thanks,

Sankar.N