Error: Reference Nbr. cannot be found in the system.."} - acumatica

Question

I customized the ARPaymentEntry in which it creates a Journal Voucher Entry with created Credit Memo, it retrieves the Credit Memo applies the open invoice that is also applied in the current payment. when I create the instance to call the Credit Memo and add the Invoice in ARAdjust table, an error occurs when trying to insert it, giving a Reference Nbr cannot be found in the system, although when I'm trying to manually applying it I could see the open invoice.
public void ReleaseCreditMemo(string refNbr)
{
try
{
ARPaymentEntry docGraph = PXGraph.CreateInstance<ARPaymentEntry>();
List<ARRegister> list = new List<ARRegister>();
ARPayment payment;
ARRegister invoice = PXSelect<ARRegister, Where<ARRegister.docType, Equal<Required<ARRegister.docType>>, And<ARRegister.refNbr, Equal<Required<ARRegister.refNbr>>>>>.Select(docGraph, ARInvoiceType.CreditMemo, refNbr);
docGraph.Document.Current = PXSelect<ARPayment, Where<ARPayment.docType, Equal<Required<ARPayment.docType>>, And<ARPayment.refNbr, Equal<Required<ARPayment.refNbr>>>>>.Select(docGraph, ARInvoiceType.CreditMemo, refNbr);
payment = docGraph.Document.Current;
list.Add(payment);
foreach (ISARWhTax item in ARWhLine.Select())
{
decimal? _CuryAdjgAmt = payment.CuryOrigDocAmt > invoice.CuryDocBal ? invoice.CuryDocBal : payment.CuryOrigDocAmt;
decimal? _CuryAdjgDiscAmt = payment.CuryOrigDocAmt > invoice.CuryDocBal ? 0m : invoice.CuryDiscBal;
ARAdjust adj = new ARAdjust();
adj.AdjdBranchID = item.AdjdBranchID;
adj.AdjdDocType = ARInvoiceType.Invoice;
adj.AdjdRefNbr = item.AdjdRefNbr;
adj.AdjdCustomerID = item.CustomerID;
adj.AdjdDocDate = invoice.DocDate;
adj.CuryAdjgAmt = _CuryAdjgAmt;
adj.CuryAdjdDiscAmt = _CuryAdjgDiscAmt;
if (docGraph.Document.Current.CuryUnappliedBal == 0m && docGraph.Document.Current.CuryOrigDocAmt > 0m)
{
throw new PXLoadInvoiceException();
}
//This line code below OCCURS THE ERROR
docGraph.Adjustments.Insert(adj);
}
docGraph.Save.Press();
PXLongOperation.StartOperation(docGraph, delegate() { ARDocumentRelease.ReleaseDoc(list, false); });
}
catch (Exception ex)
{
throw new PXException(ex.Message);
}
}

Answer 1

I would look at the selector of the field causing the error ("Reference Nbr.") as having a selector on a field will validate the entered value to the selector's select statement (unless validatevalue=false for the selector). Maybe the selector will give you some pointers as to what is missing or causing the validation to fail.

Answer 2

I figured it out it that after the code below executes it does not immediately updates the View. So what I did is to execute my code at ARPayment_RowSelected event with a conditional statement if the document is released.
PXLongOperation.StartOperation(this.Base, delegate() { ARDocumentRelease.ReleaseDoc(list, false); });