Debit/ Credit Memos in J1IDUELIST

D Friends,

I'm testing std. process of Debit/ Credit memos. The item categories are L2N and G2N respectively. There is no Delivery involved. But the Debit/ Credit memos created with t.code VF01 are coming in J1IDUELIST. There is no assignment of Billing Types to Delivery Types in CIN config for Debit/ Credit memo types. It it a std. process that Debit/ Credit Memos will come in J1IDUELIST? How to achieve that Debit/ Credit memos should not come in J1IDUELIST?

Thank you.