acumatica - Tax calculation is wrong when updating UnitPrice while creating the Invoice from Shipment, TaxAttribute.Calculate uses the old extprice -

in our add-on, modifying unitprice when creating invoice shipment based on our own calculation regex expression. seems fine fields, except taxes take soorder taxes.

we created pxgraphextension , used following:

public void invoiceorder(datetime invoicedate, pxresult<soordershipment, soorder, currencyinfo, soaddress, socontact, soordertype> order, pxresultset<soshipline, soline> details, customer customer, documentlist<arinvoice, soinvoice> list,         action<datetime, pxresult<soordershipment, soorder, currencyinfo, soaddress, socontact, soordertype>, pxresultset<soshipline, soline>, customer, documentlist<arinvoice, soinvoice>> method)     {         using (var scope = new pxtransactionscope())         {                             method(invoicedate, order, details, customer, list);             lookupbalesfromorderandshipment();             scope.complete();         }     } 

in lookupbalesfromorderandshipment(); modify unitprice based on our calculation, , call base.transactions.update(updatedline); our new value , base.persist();

all data seems fine except tax details tab, still uses old curylineamt instead of new curylineamt of newly created invoice.

i have tried forcing tax recalculation in rowupdated event doesn't seem doing anything.

        protected virtual void artran_rowupdated(pxcache cache, pxrowupdatedeventargs e, pxrowupdated invokebasehandler)     {          if (invokebasehandler != null)             invokebasehandler(cache, e);               taxattribute.calculate<artran.taxcategoryid>(cache, e);       } 

declaring var row = (artran)e.row; , inspecting variable tells me right new curylineamt, taxes still seem calculated on came in soorder.

is there other way force tax calculation or update artax , artaxtran table without risks?

the base function invoiceorder changes tax calculation methods fit initial salesinvoice creation:

taxattribute.settaxcalc<artran.taxcategoryid>(this.transactions.cache, null, taxcalc.manualcalc); 

every other time access page, tax calculation method used 1 set in soinvoiceentry's constructor:

taxattribute.settaxcalc<artran.taxcategoryid>(transactions.cache, null, taxcalc.manuallinecalc); 

your solution set appropriate tax calculation method after calling base delegate:

public delegate void invoiceorderdelegate(datetime invoicedate, pxresult<soordershipment,soorder,currencyinfo,soaddress,socontact,soordertype> order, pxresultset<soshipline,soline> details, customer customer, documentlist<arinvoice,soinvoice> list); [pxoverride] public void invoiceorder(datetime invoicedate, pxresult<soordershipment,soorder,currencyinfo,soaddress,socontact,soordertype> order, pxresultset<soshipline,soline> details, customer customer, documentlist<arinvoice,soinvoice> list, invoiceorderdelegate basemethod) {     basemethod(invoicedate,order,details,customer,list);      taxattribute.settaxcalc<artran.taxcategoryid>(base.transactions.cache, null, taxcalc.manuallinecalc);      var tran = base.transactions.current;     tran.curyunitprice = tran.curyunitprice + 10m;     base.transactions.update(tran);     base.actions.presssave(); }