The tax code and tax rate are stored in Table t007v, which are linked to the request number. If you cannot find more sap explanations, just use them.
When the system is installed, the table contains some standard data. The trkorr field value is pl0k008530. If it is modified in the configuration, the field will become the actual custom transmission request number.
The value of the price field kbetr is multiplied by 1000. For example, if the tax rate is 17%, the value of this field in the database is 170, which should be divided by 1000 during calculation.
Mandt clnt 3 0 Client
Trkorr char 20 0 request/task
Aland char 3 0 shipping country (by this country)
Mwskz char 2 0 Sales/purchase taxCode
Txjcd char 15 0 Tax Code
Datam DATs 8 0 effective from
Kschl char 4 0 Condition Type
Kbetr curr 11 2 price (condition amount or percentage)
Knumh char 10 0 condition Record Number
Kotabnr numc 3 0 condition table
Datum DATs 8 0 date
Uzeit TIMS 6 0 time