Use

The system calculates interest only on those items for which it is able to determine an interest key. An interest key can be assigned to contract account, items or dunning levels . The system normally determines the interest key for each industry, but can also do so on a customer-by-customer basis.

Generally, an interest key is determined as follows:

If no interest key has been entered in an item, the system checks for an interest key entry in the contract account. If no interest key exists in either place, interest cannot be calculated on the item. In other words, the item is interpreted as being blocked for interest calculation even if an explicit interest block has not been set.

If a debit item has been dunned but no interest key is entered, the system will try to determine a dunning key by looking at the dunning level of the item. If an interest key has not been maintained there, the contract account is used.