item dff attribute in receivables SLA (Credit Memo)

Summary:

We are trying to derive Credit Memo SLA rule using Item DFF attribute. Under 'Manage Sources', we found below attributes:

CM_LINE_GLOBAL_ATTR2 – CM DFF Line Attribute

CM_LINE_INTERFACE_LINE_ATTR2 – CM LINE DFF (Interface table)

CM_LINE_ITEM_GLOBAL_ATTR2 – CM LINE (Item DFF)

CM_MEMO_LINE_GLOBAL_ATTR2 – CM Memo Line

Our understanding is that CM_LINE_ITEM_GLOBAL_ATTR2 could be mapped to Item DFF Attribute 2. But we tried this and it does not fetch the value.

In above case, if CM line's DFF attribute is CM_LINE_GLOBAL_ATTR2, then which attribute is referred under CM_LINE_ITEM_GLOBAL_ATTR2 - The understanding is that this is from the Item's DFF.