One significant limitation of multithreading for CSV imports in NetSuite is that the order in which CSV file rows are submitted cannot be predicted or guaranteed. Multithreading is a process that allows multiple threads or processes to perform tasks simultaneously, which can significantly speed up the import of large datasets.
However, because these threads operate concurrently, the system processes the rows in the CSV file in parallel, resulting in an unpredictable order of submission. This characteristic can be problematic for data that needs to be imported in a specific sequence to maintain data integrity or hierarchical relationships. For users who require data to be imported in a precise order, alternative methods or additional steps to ensure data consistency might be necessary.References: NetSuite Help Center documentation on CSV import functionalities and limitations.