CM25 layout Id and layout key relation

Hi All,

Is there anyway I can find layout key from layout id to modify the layout columns in CM25 transaction. I know layout Id from overall profile but when I want to modify the fields to display in CM25, I have to go with CY38 transaction where it takes layout key only..I have worked earlier on this and added some fields to display in CM25 but strangely I am not getting now the relation between layout id and key...