Nickname for all countries in infotype 0002

Dear Experts,

we need to maintain nickname field for all countries in infotype 0002.

P0002-RUFNM doesn't exist in T588M for all of them, so we can't use it.

I was thinking using P0002-CNAME, but it seems it can not be displayed/maintained in PA20/30 .

Please, could you help me?

Thanks in advance for you support!

Maria José