Hide Dialog field from data contract in d365

 

[DataMemberAttribute,SysOperationControlVisibilityAttribute(false)]

public ItemId parmItemId(ItemId _itemId = itemId)
{
    ;

    itemId = _itemId;
    return itemId;
}

Ref:- https://www.miklix.com/dynamics-ax/hide-sysoperation-data-contract-dialog-field-in-dynamics-ax-2012/