Receive an IDoc

This section shows how to receive and process a MATMAS IDoc.
To configure your SAP system to send MATMAS IDocs, see Set Up a Test Environment for IDocs.

About

The following sample receives a MATMAS IDoc that contains material descriptions. The material descriptions are written into the console window to check the contents of the IDoc.

The MATMAS IDoc is analyzed using the E2MARAM005 segment. Within this segment, several E2MAKTM001 child segments contain material descriptions.

Receive a MATMAS IDoc

Follow the steps below to receive a MATMAS IDoc:

1. Create an RFC Server object to accept calls from SAP, see RFC Server for more information.
2. To receive IDocs with the RFCServer object, set the property CanReceiveIdocs to true.
   
3. When an IDoc is received by ERPConnect, the event IncomingIdoc is triggered and a reference to the RFCServer object and to the IDoc object is transferred.
4. Use the IncomingIdoc event to read the data buffer of the child segment E2MAKTM001. The description text is located at index 4 with a length of 40 in E2MAKTM001.
   
5. Write the description texts into the console window.
6. Run the program.
7. Send an IDoc in SAP and check the result.

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using System;
using ERPConnect;
using ERPConnect.Idocs;

// Set your ERPConnect license
LIC.SetLic("xxxx");

using var server = new RFCServer();
server.Logging = true;
server.GatewayHost = "hamlet";
server.GatewayService = "sapgw11";
server.ProgramID = "ERPTEST";
server.CanReceiveIdocs = true;

server.InternalException += (_, exception) =>
{
    Console.WriteLine($"Internal error: {exception.Message}");
};

server.IncomingIdoc += (_, idoc) =>
{
    Console.WriteLine("Received Idoc " + idoc.IDOCTYP);
    IdocSegment e1maram = idoc.Segments["E2MARAM005", 0];
    for (int i = 0; i < e1maram.ChildSegments.Count; i++)
    {
        if (e1maram.ChildSegments[i].SegmentName != "E2MAKTM001")
        {
            continue;
        }

        string text = e1maram.ChildSegments[i].ReadDataBuffer(4, 40);
        Console.WriteLine($"Material text found: {text}");
    }
};

server.Start();

Console.WriteLine("Server is running. Press any key to exit.");
Console.ReadLine();

server.Stop();

Output:

In this case, 5 E2MAKTM001 segments were found so 5 texts are passed.