what is Apply to oldest{#invoice#} by date of aging preference

AI generated answer (using internal Slack threads):

The 'Apply to oldest invoice by date of aging preference' is a feature in NetSuite that allows you to automatically apply payments or credit memos to the oldest outstanding invoices. This feature is particularly useful when you are dealing with a large number of invoices and payments, and you want to ensure that the oldest invoices are paid off first. When you load credit memos via CSV import, you can use this feature to automatically apply the credit memos to the oldest outstanding invoices, without having to reference the invoice number on the import. This can be achieved with an After Submit User Event script in SuiteScript. However, it's important to note that this feature applies to the date of the invoice, not the due date. Therefore, if you have invoices with different due dates, the payment or credit memo will be applied to the invoice with the oldest date, not the one with the earliest due date. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******