SAP .NET Connector 3.0 - ZQMTRANSP_DOREAD_FM "NO_PVP" internal error

Question

I have downloaded SAP .NET Connector 3.0 (https://github.com/ion-sapoval/NSAPConnector) and set up the connection parameters:

 <SAP.Middleware.Connector>
    <ClientSettings>
      <DestinationConfiguration>
        <destinations>
          <add NAME="DESTINY" USER="UZIVATEL" PASSWD="*****" CLIENT="001" LANG="EN" 
               ASHOST="192.168.132.197" SYSID="P" SYSNR="00" POOL_SIZE="5" 
               MAX_POOL_SIZE="10"/>
          ...

Afterwards, I have changed the lines with the "STRINGS" in the example code:

    using (var connection = new SapConnection("DESTINY"))
    {
        connection.Open();
        var session = new SapSession(connection);
        var command = new SapCommand("ZQMTRANSP_DOREAD_FM", connection);
        command.Parameters.Add("PARAM1", "5");
        command.Parameters.Add("PARAM2", "000000900862");
        session.StartSession();
        var resultDataSet = command.ExecuteDataSet();
        session.EndSession();
        var sapDataReader = command.ExecuteReader("RESULTS");
   ...

When the code is executed it results with the internal error: NO_PVP

NSAPConnector.CustomExceptions  {"An exception occurred when trying to execute corresponding 
.NSAPConnectorException         function for the 'ZQMTRANSP_DOREAD_FM' on server.
                                Check inner exception for more details."} 
  Data                          {System.Collections.ListDictionayInternal} 
  HelpLink                      null
  HResult                       -2146232832 
  InnerException                {"NO_PVP"}
    AbapMessageClass            ""
    AbapMessageNumber           000
    AbapMessageParameters       {string[4]} 
    AbapMessageType             32 ' '
    AbapT100Message             ""
    Data                        {System.Collections.ListDictionayInternal} 
    HelpLink                    null
    HResult                     -2146232832 
    InnerException              null
    Key                         NO_PVP
    Message                     NO_PVP
    PlainText                   null 
    Source                      sapnco 
    StackTrace                    at SAP.Middleware.Connector.RfcConnection.ThrowRfcErrorMsg() at SAP.Middleware.Connector.RfcConnection.RfcReceive(RfcFunction function) at SAP.M...
    TargetSite                  {Void ThrowRfcErrorMsg()} 
    Message                     An exception occurred when trying to execute corresponding
                                function for the 'ZQMTRANSP_DOREAD_FM' on server.
                                Check inner exception for more details.
    Source                      NSAPConnector 
  StackTrace                      at NSAPConnectorSapCommand.ExecuteRfc() in C:\Users\xxxxx\NSAPConnector-master\NSAPConnector.core\SapCommand.cs:line 194 at NSAP... 
  TargetSite                    {SAP.Middleware.Connector.IRfcFunction ExecuteRfc()} 
    Attributes                  Public | HideBySig 
    CallingConvention           Standard | HasThis 
    ContainsGenericParameters   false 

However, there is no error with different RFC function. I guess the error is related to the fact that function ZQMTRANSP_DOREAD_FM contains a table.

Answer 1

As the issue was solved by the OP as per the comments, I'm just taking out these comments to highlight the solution and help others to see it more easily (NB: I'm not sure that the error can be seen in ST22, which would mean that there was a runtime error in the ABAP server, my opinion is that it's more an exception returned by ZQMTRANSP_DOREAD_FM and an ABAP debug of this FM is required to understand what produced it):

Jun 27, 2016 at 16:10

"It looks like an error is thrown by the function module being called. Check with ST22 in the target system, please."

Original Poster of the question Jul 31, 2017 at 15:44

*"This was an error within the RFC function. All it takes to fix that error was to set different language LANG="CS" within a destination. If only the error would be named for example UNSUPPORTED_LANG instead of NO_PVP."