after populating product category in table - ZX_LINES_DET_FACTORS, how to calculate taxes ?

We have a requirement to import requisitions from a third-party application. To achieve this, we insert requisition records into the Oracle interface tables and subsequently execute the "Requisition Import" program.

However, there is an additional requirement: the product category must be populated in the ZX_LINES_DET_FACTORS table using data from the ZX_FC_CODES_DENORM_B table. Furthermore, tax recalculation should be performed based on the product category.

Could someone please provide guidance on how to implement tax recalculation triggered by the product category during this process?