QuickBooks Error 213 typically occurs when there are duplicate entries in the list of data files, causing confusion within the software. This error can interrupt your workflow, but it can be resolved quickly with a few steps. Causes: Duplicate Entries: The most common cause is duplicate entries in the QuickBooks list of data files. Data File Corruption: Corrupted data files can also trigger this error. Signs: Error Message: An error message with the code 213 will appear on your screen. System Performance Issues: You may experience slow performance or difficulties accessing certain features in QuickBooks. Quick Solution: Rebuild Data File: Go to File > Utilities > Rebuild Data. Follow the on-screen instructions to complete the rebuild process. Verify Data File: Go to File > Utilities > Verify Data. This helps to identify and resolve data issues. Remove Duplicate Entries: Identify and remove duplicate entries from the list that is causing the error. This can be done manually or by using QuickBooks tools. By following these steps, you can quickly resolve QuickBooks Desktop Error 213 and restore normal functionality. If you encounter further issues, consider seeking professional assistance to ensure your data integrity.