As long as certain data agrees, you can also combine different documents (orders and/or deliveries) fully or partially in a common billing document:

The following prerequisites must be met:
- the header data appearing in the billing document must agree
- the split conditions specified do not apply

The system behaves differently for the functions Billing due list and Create billing document

Process billing due list
The system combines documents with the same customer number, proposal billing type and sales organization, and attempts to include them all in the same billing document. If the preconditions are met, then a single invoice is created for the deliveries and/or orders.

Create billing document
When creating several billing documents, user exits can be used to reset the header data, so that more can be combined than in the billing due list.

Creating Periodic Billing Documents

Some customers may require invoices to be processed periodically, so that all deliveries due for billing by a certain time are put into one collective invoice.

To fulfill this requirement, a billing schedule must be defined for the customer:

A factory calendar which contains special rules instead of working days must be created. These special rules refer to the days on which billing should be carried out. If, for example, an invoice is to be issued every last working day of the month, then this day must be entered as "valid from" day and "valid to" day. This day must be the only day defined as a working day in the calendar for each month.

The ID-number of the factory calendar must be specified on the billing screen of the payer's customer master record in the Billing schedule field.

Activities
When a sales document is created, the system copies the invoice date from the factory calendar and enters it into the relevant document as follows:

On the next billing date determined by the factory calendar, the system selects all sales orders and deliveries and puts them in a billing due list. They can now be billed.

As a result of the ID-number of the factory calendar defined in the customer master record, all sales orders or deliveries for that customer over a particular period have the same billing date, and they can be combined in one collective invoice.
 

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