Object Reference not Set error in EngWorkbench Service

[jgehling (Jeff Gehling)]

Hello Friends!

I’m writing a function to add ops/mtls to a part revision via the EngWorkBench service. All goes well, except when I attempt to use the CheckInAndRefresh method. I’ve followed the trace and everything.

Here is my code:

var engTable = new Erp.Tablesets.EngWorkBenchTableset();
string myPartNum = " CA-M-706870-1-FP";
string opCheckedOutRevisionNum = "";
string altMethodMsg = "";
bool altMethodFlg;
string refreshMessage = "";
string opMessage = "";
Action CheckOutPart = () =>
{
  CallService<Erp.Contracts.EngWorkBenchSvcContract>(engSvc =>
  {
    engTable = engSvc.CheckOut("DMT", myPartNum, "A", "", "", DateTime.UtcNow, false, true, false, true, false, out opCheckedOutRevisionNum, out altMethodMsg, out altMethodFlg);
    engSvc.GetNewECOOpr(ref engTable, "DMT", myPartNum, "A", "", "");
    engSvc.ChangeECOOprOpCode("X-PD150", out refreshMessage, ref engTable);
    engSvc.Update(ref engTable);
    var currentRevRecord = engTable.ECORev.FirstOrDefault();
    currentRevRecord.Approved = true;
    currentRevRecord.RowMod = "U";
    engSvc.ChangeECORevApproved(true, ref engTable);
    engSvc.Update(ref engTable);
    engTable = engSvc.CheckInAndRefresh("DMT", myPartNum, "A", "", "", false, "ECO Group Integration Import", out opMessage);
    
  });
};

CheckOutPart();

And here is the resulting error when running the check in method:

Any ideas on what the culprit could be?

[jgehling (Jeff Gehling)]

Found the solution here:

Building a part MOM on the EWB BO -- CheckIn issues

From a suggestion per Jim Kinneman: Erp.Contracts.EngWorkBenchSvcContract **engWorkBench** = Ice.Assemblies.ServiceRenderer.GetService<Erp.Contracts.EngWorkBenchSvcContract>(this.Db, true); Erp.Contracts.EngWorkBenchSvcContract **engWorkBenchCheckIn** = Ice.Assemblies.ServiceRenderer.GetService<Erp.Contracts.EngWorkBenchSvcContract>(this.Db, true); I defined a different service to execute the CheckIn method. Worked great. Thanks, Jim! Joe

Wild I have to call service renderer again just to check in.

Final code:

var engTable = new Erp.Tablesets.EngWorkBenchTableset();
var returnEngTable = new Erp.Tablesets.EngWorkBenchTableset();
string myPartNum = " CA-M-706870-1-FP";
string opCheckedOutRevisionNum = "";
string altMethodMsg = "";
bool altMethodFlg;
string refreshMessage = "";
string opMessage = "";
Action CheckOutPart = () =>
{
  CallService<Erp.Contracts.EngWorkBenchSvcContract>(engSvc =>
  {
    engTable = engSvc.CheckOut("DMT", myPartNum, "A", "", "", DateTime.UtcNow, false, true, false, true, false, out opCheckedOutRevisionNum, out altMethodMsg, out altMethodFlg);
    engSvc.GetNewECOOpr(ref engTable, "DMT", myPartNum, "A", "", "");
    engSvc.ChangeECOOprOpCode("X-PD150", out refreshMessage, ref engTable);
    engSvc.Update(ref engTable);
    var currentRevRecord = engTable.ECORev.FirstOrDefault();
    currentRevRecord.Approved = true;
    currentRevRecord.RowMod = "U";
    engSvc.ChangeECORevApproved(true, ref engTable);
    engSvc.Update(ref engTable);
    //returnEngTable = engSvc.CheckInAndRefresh("DMT", myPartNum, "A", "", "", false, "ECO Group Integration Import", out opMessage);
  });
  
  CallService<Erp.Contracts.EngWorkBenchSvcContract>(engSvc1 =>
  {
    returnEngTable = engSvc1.CheckInAndRefresh("DMT", myPartNum, "A", "", "", false, "ECO Group Integration Import", out opMessage);
  });
};

CheckOutPart();