why does the assemblies with specific cositng method can't use WIP?

AI generated answer (using internal Slack threads):

Work In Progress (WIP) is a concept used in manufacturing to track the cost of items that are in the process of being manufactured but are not yet complete. In NetSuite, WIP is typically used in conjunction with the Assembly Items and Work Orders features. The reason assemblies with specific costing methods can't use WIP is due to the way NetSuite handles costing for assembly items. When an assembly item is built, the cost of the components is immediately recognized and transferred to the finished good. This is done regardless of the costing method used (Standard, Average, LIFO, FIFO). WIP is designed to track costs that are incurred during the manufacturing process but before the finished good is completed. However, since the cost of the components in an assembly item is immediately recognized upon build, there is no "in-process" cost to track in WIP. Therefore, WIP is not applicable for assemblies with specific costing methods in NetSuite. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******