Description

1. An accounting period starts from the first of the month until the last day of the month.
2. All billing documents (invoice, CN and DN) with document date that falls between an accounting period (first and last day inclusive) is deemed to be within the accounting period.
3. Editing an invoice (customer, internal and miscellaneous) after the accounting period will automatically:
   • Create a credit note in the current accounting period with the relevant service charges to void the existing invoice.
   • Create a new invoice (with new invoice number) with the updated details in the current accounting period.

Objectives

1. Create a helper function in BillingService class to return the current accounting period.
2. Return the current accounting period in all listing page requests to be displayed in the UI.
3. Implement auto-creation of CN and new invoice in current accounting period when user edits an invoice from previous accounting periods. Customer and internal invoice modules shall be covered.

Estimation

24 hours, include development, developer testing, unit test development (if applicable) and peer test/review.