When it comes to managing customer invoices in NetSuite, enabling invoice approval routing is an important step in maintaining control over the billing process. First, navigate to the Accounting Preferences page in NetSuite and select the Approval Routing tab. Here, you can activate invoice approval routing, which enables organizations to build a customized workflow process within SuiteFlow. A customized workflow ensures the right individuals review invoices before sending them out. Workflow setups help businesses enforce oversight, reducing the risk of errors, fraud, or unauthorized invoice processing.