在推荐查询方法之前，建议您查看以下社区文章，这些文章介绍了新的WMS体系结构以及如何在同一个中覆盖不同的方法：

• https://community.acumatica.com/customization-and-development-72/how-to-customize-an-existing-screen-with-the-new-automated-warehouse-operations-engine-in-acumatica-erp-2021-r1-and-later-8029
• https://community.acumatica.com/customization-and-development-72/how-to-customize-the-new-automated-warehouse-operations-engine-in-acumatica-erp-2021-r1-and-later-barcode-driven-state-machine-architecture-8024

根据您的要求，建议采用以下方法：
1.为ScanMove图表创建一个新的扫描扩展名，如下所示：

public class ScanMoveExtension : ScanMove.ScanExtension {}

1.通过重写Process方法，创建一个新的ScanCommand以执行所需的操作/更改。
1.在添加SetQtyCommand之前，重写DecorateScanMode方法并添加新命令，如下所示：

[PXOverride]
   public virtual ScanMode<ScanMove> DecorateScanMode(ScanMode<ScanMove> original, Func<ScanMode<ScanMove>, ScanMode<ScanMove>> base_DecorateScanMode)
{
        var mode = base_DecorateScanMode(original);
    if (mode is ScanMaterial.MaterialMode materialMode)
    {
        mode
            .Intercept.CreateCommands.ByReplace(basis =>
             {
               // modify the order of the commands added
               // RemoveCommand, SetQtyCommand and ReleaseCommand
               // add your logic before SetQtyCommand
        });
    }
  return mode;
}

这将使您能够在执行SetQty命令之前执行这些步骤。