Processing
This section covers how to create and manage instalment payments for both new sales documents and existing customer ledger entries.
Creating Instalments for Sales Documents
On the sales document, navigate to the Payment Methods section on the Invoice Details fast tab:

You can specify either an Instalment Schedule Code or a Payment Method Code to determine the instalments to be created.
Using Payment Methods configured for Instalaments
When you select a Payment Method Code configured for instalment payments, the system automatically populates the Instalment Payments section with default settings.

The instalment details are only editable when the payment method is configured for instalment payments.
Using Instalment Schedules
The Instalment Schedule Code field displays the available Instalment Schedule Templates configured in your system.

When you select an Instalment Schedule Code the system automatically populates the Instalment Payments section with default settings.
Customising Instalment Schedules
If using an Instalment Schedule Code, you can select the ellipsis (...) button beside the field. This opens a customisation window where you can:
- Create a document-specific instalment schedule
- Adjust the default settings to meet specific requirements

Posting the Document
Before posting, you can use Preview Posting to review the ledger entries that will be created. Once you've verified the entries are correct, post the document.

Creating Instalments for Existing Customer Ledger Entries
If a sales document has already been posted and you subsequently need to convert it to instalment payments, you can create instalments directly from the Customer Ledger Entries page.

Configuring Instalment Details
Similar to the sales document process, you can specify either a Payment Method Code or Instalment Schedule Codeon the resulting page. This automatically populates the Instalment Information section with default settings, which can be modified.

Setting the Initial Payment Date
The Initial Entry Posting Date field allows you to specify when the first instalment should be due. All subsequent instalments will be calculated based on this initial posting date and the configured period formulas.
Processing the Conversion
Once you have updated the values, select Post, which will: - Reverse the original customer ledger entry - Create the new instalment entries
This process reverses the original entry and cannot be easily undone.
Summary
The instalment processing workflow provides flexibility for both new and existing transactions:
- New Sales Documents: Configure instalments before posting for seamless processing
- Existing Entries: Convert posted entries to instalments when business requirements change
- Preview Function: Always available to verify calculations before committing changes