Diagnosis
A time period and a calendar have been entered in this rule. Thisprevents the system from generating settlement periods correctly whencreating the next billing/invoice date.

Procedure
If you require a different billing/invoice date, use the rule fordetermining a different billing/invoice date. In this rule, you can usethe calendar and/or the time period to change the originalbilling/invoice date.
If a time period has been entered in the rule, the system adds orsubtracts the period to or from the original billing/invoice date. Whenyou then look in the calendar, the system will always search forwardsfrom this new date.
If you do not enter a calendar or a time period, the system searchesfor the next selected date from the original billing/invoice date.