In this IMG activity, you assign a billing plan type and billing relevance 'I' (relevant for order-related billing/billing plan) to the item categories for which you want to create a billing plan. This assignment is necessary for creating a billing plan for the relevant order items.
In the standard system, item category MVN is configured for
periodic billing and item category TAO is configured for milestone
Specify 'I' for billing relevance and enter a billing plan type for item categories for which you want to enter a billing plan.