Can anyone Please explain this table

[kunal aggarwal]

Hi all

I have queried table *invoice_item_type* using following query *
*

SELECT invoice_item_type_id, parent_type_id, has_table, description,
       default_gl_account_id, last_updated_stamp, last_updated_tx_stamp,
       created_stamp, created_tx_stamp
  FROM invoice_item_type
  where
invoice_item_type_id like '%TAX'


I found the following result

*invoice_item_type_id     *                   *    description*

"PINV_SALES_TAX"                            "Sales Tax"
"INV_SALES_TAX"                                sales tax
"ITM_SALES_TAX"                              "Sales Tax"
"PITM_SALES_TAX"                            "Sales Tax"


I have understood how   "ITM_SALES_TAX"and "PITM_SALES_TAX"  are used in
invoice generation.

However can anyone tell me the purpose of "PINV_SALES_TAX"   and
"INV_SALES_TAX"
types ?


Please reply if anyone have this idea


regards
kunal