ODBC-2028 Error SAP B1 - sapb1

Question

I am trying to add a purchase order by DI API for SAP B1. My code is working on my client but I tried it as an addon on another company that has different data. And it gives the error: "No matching records found(ODBC-2028)". Here is a part of my code:
public void createPOrderFor(int id,
string itemCode,
string itemName,
int qty,
int satisSip,
string cardCode,
string cardName,
string releaseDate)
{
SAPbobsCOM.Documents BO_item;
BO_item = (SAPbobsCOM.Documents)getCompany().GetBusinessObject(SAPbobsCOM.BoObjectTypes.oPurchaseOrders);
base.doConnectionInfo();
server = base.server;
database = base.database;
user = base.user;
pass = base.pass;
string year = releaseDate.Substring(0, 4);
string month = releaseDate.Substring(4, 2);
string day = releaseDate.Substring(6, 2);
releaseDate = year + "-" + month + "-" + day;
BO_item.Lines.ItemCode = itemCode;
BO_item.Lines.ItemDescription = itemName;
BO_item.Lines.Quantity = qty;
BO_item.Lines.ShipDate = DateTime.Parse(releaseDate);
BO_item.Lines.UserFields.Fields.Item("U_SatisSip").Value = satisSip;
BO_item.Lines.Add();
BO_item.Comments = satisSip + " numaralı satış siparişine istinaden";
BO_item.CardCode = cardCode;
BO_item.CardName = cardName;
BO_item.NumAtCard = "";
BO_item.Series = 13;//birincil
//BO_item.Segment -- it is read only.
BO_item.TaxDate = DateTime.Now;
BO_item.DocDate = DateTime.Now;
BO_item.DocDueDate = DateTime.Parse(releaseDate);
BO_item.SalesPersonCode = 4;//default Hakan Yılmaz
BO_item.DocumentsOwner = 4;
BO_item.DiscountPercent = 0.0;
BO_item.Address2 = "TURKEY";
BO_item.Address = "";
BO_item.TransportationCode = 1;
BO_item.AgentCode = null;
BO_item.JournalMemo = "Satınalma siparişleri - " + cardCode;
BO_item.GroupNumber = 1;//net30
BO_item.PaymentMethod = null;
BO_item.Project = null;
BO_item.UserFields.Fields.Item("U_SatSip").Value = satisSip;
var retVal = BO_item.Add();
int errorCode = 0;
string errMsg = "";
if (retVal != 0)
{
getCompany().GetLastError(out errorCode, out errMsg);
SAPbouiCOM.Framework.Application.SBO_Application.StatusBar.SetText("Error: " + errMsg , SAPbouiCOM.BoMessageTime.bmt_Long, SAPbouiCOM.BoStatusBarMessageType.smt_Error);
}

Answer 1

First of all remove all null fields. If there are DI Object fields that you cannot provide a value for, you should not set them equal to null.
BO_item.AgentCode = null;
BO_item.PaymentMethod = null;
BO_item.Project = null;
Just remove them completely. Also instead of Date.Time.Now try setting a date in this format: 20180531 for all date fields as a test.
BO_item.DocDate = "20180531"
If it returns the same error, attempt to test this in an SAP Business One Demo Database (can be obtained from sap partneredge).
Also, Ensure the User Defined Fields you are trying to set values for exist in your new customer's database
let me know how it works for you so we can continue.