Diagnosis
You have used a discount key in fact maintenance that is not permitted.

System response<(><)>
The system has identified a discount key that is not permitted.
Possible errors:

• The fact time slice and the discount time slice do not match.


• The billing class of the rate, the rate category or the installation do
not match the billing class of the discount.

• The unit of measurement for the operand in the facts does not match the
unit of measurement for the discount.

Procedure
Choose an appropriate discount key using F4 (possible entries key) inthe discount field.