Copy standard bapi to Zbapi in the same standard package

Dear SAP,

I wanted to copy a standard bapi into Zbapi. As soon as i do this it is asking for access key.

Is it ok to use the access key and create??

Is there any exit to do this ?

Please help me in this regard.

The Bapi name  /AFS/BAPI_SALESORD_CREATEFDATA

from this Bapi, i want to create the ZBAPI.

Regards,

Arati