Creating new D365FO Business Event

Main contract class:

/// <summary>
/// This is a BusinessEventContract class for Customer
/// </summary>
[DataContract]
class VKCustTableBusinessEventContract extends BusinessEventsContract
{
    SysAppCRUDOperation                action;
    CustAccount                        custAccount;
    DataAreaId                        dataAreaId;

    private void initialize(CustTable _custTable, SysAppCRUDOperation _action)
    {
        custAccount    = _custTable.AccountNum;
        dataAreaId    = _custTable.DataAreaId;
        action        = _action;
    }

    /// <summary>
    /// Create new VKCustTableBusinessEventContract from CustTable and action
    /// </summary>
    /// <param name = "_custTable">CustTable table</param>
    /// <param name = "_action">Action</param>
    /// <returns>a new VKCustTableBusinessEventContract</returns>
    public static VKCustTableBusinessEventContract newFromCustTable(CustTable _custTable, SysAppCRUDOperation _action)
    {
        VKCustTableBusinessEventContract    contract    = new VKCustTableBusinessEventContract();
        contract.initialize(_custTable, _action);
        return contract;
    }

    protected void new()
    {
    }

    [DataMember('CustAccount'), BusinessEventsDatamember("CustAccount")]
    public CustAccount parmCustAccount(CustAccount _custAccount = custAccount)
    {
        custAccount = _custAccount;
        return custAccount;
    }

    [DataMember('Action'), BusinessEventsDatamember("Action")]
    public SysAppCRUDOperation parmAction(SysAppCRUDOperation _action = action)
    {
        action = _action;
        return action;
    }

    [DataMember('DataAreaId'), BusinessEventsDatamember("DataAreaId")]
    public DataAreaId parmDataAreaId(DataAreaId _dataAreaId = dataAreaId)
    {
        dataAreaId = _dataAreaId;
        return dataAreaId;
    }

}

Business event class:

/// <summary>
/// This is a BusinessEvent class for Customer
/// </summary>
[BusinessEvents(classStr(VKCustTableBusinessEventContract),
    "Customers CU",
    "Event for create, update",
    ModuleAxapta::General)]
class VKCustTableBusinessEvent extends BusinessEventsBase
{
    private CustTable custTable;
    SysAppCRUDOperation action;

    /// <summary>
    /// Create new VKCustTableBusinessEvent from CustTable and action
    /// </summary>
    /// <param name = "_custTable">CustTable table</param>
    /// <param name = "_action">Action</param>
    /// <returns>a new VKCustTableBusinessEvent</returns>
    public static VKCustTableBusinessEvent newFromCustTable(CustTable _custTable, SysAppCRUDOperation _action)
    {
        VKCustTableBusinessEvent businessEvent = new VKCustTableBusinessEvent();
        businessEvent.parmAction(_action);
        businessEvent.parmCustTable(_custTable);
        return businessEvent;
    }

    private CustTable parmCustTable(CustTable _custTable = custTable)
    {
        custTable = _custTable;
        return custTable;
    }

    private SysAppCRUDOperation parmAction(SysAppCRUDOperation _action = action)
    {
        action = _action;
        return action;
    }

    protected void new()
    {
    }

    [Wrappable(true), Replaceable(true)]
    public BusinessEventsContract buildContract()
    {
        return VKCustTableBusinessEventContract::newFromCustTable(custTable, action);
    }

}

Extension to CustTable table to trigger insert/update events:

/// <summary>
/// Extension class for Custtable table
/// </summary>
[ExtensionOf(tableStr(CustTable))]
final class VKCustTable_Extension
{
    public void insert(DirPartyType _partyType, Name _name,boolean _updateCRM)
    {
        next insert(_partyType, _name, _updateCRM);

        if (BusinessEventsConfigurationReader::isBusinessEventEnabled(classStr(VKCustTableBusinessEvent)) && !CustTable::vkSkipByUserFilter())
        {
            VKCustTableBusinessEvent::newFromCustTable(this, SysAppCRUDOperation::Create).send();
        }
    }

    public void update(boolean _updateSmmBusRelTable, boolean _updateParty)
    {
        next update(_updateSmmBusRelTable, _updateParty);

        if (BusinessEventsConfigurationReader::isBusinessEventEnabled(classStr(VKCustTableBusinessEvent)) && !CustTable::vkSkipByUserFilter())
        {
            VKCustTableBusinessEvent::newFromCustTable(this, SysAppCRUDOperation::Update).send();
        }
    }

    /// <summary>
    /// Whether to skip sending business event or not
    /// </summary>
    /// <returns>true to skip sending BE</returns>
    public static boolean vkSkipByUserFilter()
    {
        boolean ret = false;

        // Use there real user id, which will be used for integration to avoid triggering update business event when external system updates the entity
        if ('Admin' == curUserId())
        {
            ret = true;
        }

        return ret;
    }

}

Configuration:

Power Automate:

Troubleshooting: