Solution : https://service.sap.com/sap/support/notes/1649777 (SAP Service marketplace login required)
Summary :
Buffering for USA/CA tax calculation when processing identical items differing only by item number (e.g., POS_NO, ITEM_NO) is ineffective, resulting in excessive RFC calls due to the key-based buffering mechanism utilized by SAP. Enhancement proposed includes a method to buffer without using keys, utilizing a hash key constructed from input data, thereby optimizing CPU usage and potentially reducing RFC calls. Implementation details suggest setting parameters in view V_T001I and leveraging new class methods for buffer management, applicable from SAP release 6.0 and higher.
Key words :
software component sap_appl sap application, create check point group cl_xtax_calculate_tax_doc_buff, usa/ca tax calculation, hash key key derived, external tax buffering log, class method cl_xtax_calculate_tax_doc_buff=>set_parameter, tax item based calculation, class method cl_xtax_calculate_tax_doc_buff=>clear, hash key based, class set_parameter method
Related Notes :
1300470 | External tax calculation: Buffering mechanism for RFC calls |