Step-by-Step Instructions
Step 1: Access Accounting Preferences
Log in to Netsuite and navigate to the following path: Setup > Accounting > Accounting Preference.
Step 2: Open Items/Transactions
In the Accounting Preference menu, go to the Items/Transactions section.
Step 3: Select Warn and Block
Within the Items/Transactions section, select the Warn and Block option to prevent syncing duplicate invoices.