Page Comparison

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The selection can be done on any value defined on the order line, either standard like ItemNumber, or custom elements added the lines on Order Lines GetOrderLines Response

If LineNumber is used returned as the selection name the Android App will go straight for that line.
If any other value is sent outreturned, the Android App will go through the automatic searching mechanism where order line registration status is taken into account as well as the position of the selection.

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    [EventSubscriber(ObjectType::Codeunit, Codeunit::"MOB WMS Setup Doc. Types", 'OnAfterCreateDefaultDocumentTypes', '', true, true)]
    localprocedure OnAfterCreateDefaultDocumentTypes()
    var
        MobWmsSetupDocTypes: Codeunit "MOB WMS Setup Doc. Types";
    begin
        MobWmsSetupDocTypes.CreateDocumentType('SearchForPickLine', '', Codeunit::"MOB WMS Whse. Inquiry");
    end;

    [EventSubscriber(ObjectType::Codeunit, Codeunit::"MOB WMS Whse. Inquiry", 'OnWhseInquiryOnCustomDocumentType', '', true, true)]
    localprocedure MyOnWhseInquiryOnCustomDocumentType(_DocumentType: Text; var _RequestValues: Record "MOB NS Request Element"; var _ResponseElement: Record "MOB NS Resp Element"; var _IsHandled: Boolean)
    var
        ItemLedgEntry: Record "Item Ledger Entry";
        BinContent: Record "Bin Content";
        WhseActLine: Record "Warehouse Activity Line";
        MobWmsToolbox: Codeunit "MOB WMS Toolbox";
        OrderType: Text;
        BackendID: Text;
        SerialNumber: Code[50];
        StepValue: Dictionaryof [Text, Text];
    begin
        // Handle only "GetLineSelectionInformation"
        ifnot (_DocumentType.Contains('SearchForPickLine')) or _IsHandled then
            exit;

        // Get the request value of "SerialNumber" - we mapped the incoming barcode to this field
        OrderType := _RequestValues.GetValue('OrderType');
        BackendID := _RequestValues.Get_BackendID();
        SerialNumber := _RequestValues.GetValue('SerialNumber');

        if (OrderType <> 'Pick') or (SerialNumber = '') then
            exit;

        // Find ItemNo./Variant from ILE for performance reasons (prerequisite: Assuming adjustment bin is fully posted)
        if FindOpenItemLedgEntryBySN(ItemLedgEntry, SerialNumber) then
            if FindBinContentByItemLedgerEntry(BinContent, ItemLedgEntry) thenbegin

                // Select Item No. from BinContent and leave it to the device to find first element without current registrations
                // Variant Code is not handled (hence prerequisite is no two pick lines has same Item No. but different Variant Codes)

                _ResponseElement.Create('select');
                _ResponseElement.SetValue('@name', 'ItemNumber'); // Attribute on select node
                _ResponseElement.SetValue('@value', BinContent."Item No."); // Attribute on select node

                _ResponseElement.SetValue('values', ''); // values to register
                _ResponseElement.SetValue('/values/fromBin', BinContent."Bin Code"); // stepname and value
            end;

        _IsHandled := true;
    end;

    localprocedure FindOpenItemLedgEntryBySN(var _ItemLedgEntry: Record "Item Ledger Entry"; _SerialNumber: Code[50]): Boolean
    begin
        _ItemLedgEntry.Reset();
        _ItemLedgEntry.SetCurrentKey("Serial No.", "Item No.", Open, "Variant Code");
        _ItemLedgEntry.SetRange("Serial No.", _SerialNumber);

        _ItemLedgEntry.SetRange(Open, true);
        _ItemLedgEntry.SetRange(Positive, true);
        exit(_ItemLedgEntry.FindFirst());
    end;

    localprocedure FindBinContentByItemLedgerEntry(var _BinContent: Record "Bin Content"; _ItemLedgEntry: Record "Item Ledger Entry"): Boolean
    begin
        _ItemLedgEntry.TestField("Serial No.");
        _ItemLedgEntry.TestField(Quantity, 1);

        _BinContent.Reset();
        _BinContent.SetCurrentKey("Item No.");
        _BinContent.SetRange("Item No.", _ItemLedgEntry."Item No.");
        _BinContent.SetRange("Variant Code", _ItemLedgEntry."Variant Code");
        _BinContent.SetRange("Serial No. Filter", _ItemLedgEntry."Serial No.");
        _BinContent.SetRange(Quantity, 1);   // Code is written for Serial tracked item
        exit(_BinContent.FindFirst());
    end;

Sample request/response xml with customization deployed

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