Why "return authorisation" button disappear in billed sales orders?

AI generated answer (using internal Slack threads):

The "Authorize Return" button on a sales order in NetSuite typically appears after the sales order has been invoiced. This is because the return authorization process is typically associated with an invoiced order, not an unbilled sales order. If the sales order has not been billed yet, the "Authorize Return" button will not be visible. This is standard NetSuite functionality and is not related to any specific setting on the sales order. If you need to authorize a return prior to the sales order being billed, you may need to consider a custom solution such as a SuiteScript to render a button and manually transform the sales order. Please note that any changes to the standard NetSuite functionality should be carefully considered and thoroughly tested to ensure they do not disrupt your existing processes or cause unexpected results. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******