New index EKKO table

Hi,

I need to select from EKKO and the where the clause will be based on the BUKRS field, but there isn't any standard Index that contain this field, I was wondering if there is any problem to create a new index on this table?

The new index will be:

- MANDT

- BUKRS

Is this ok? It won't compromise other standards programs?

Thank and regards,

Eduardo