HSN Code from Tax Information form

Dear Friends,

I need a code to read the GSTIN number and HSN code selected in the GST Tab in Tax Information form.

Where the selected data inserted ?

Basically the form display using TMP table named as TransTaxInformationTmp_IN and also the related related table TransTaxInformationMap_IN also not having the data.

Suggest me the code



Can you tell the path to open this form?