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Automated Warehouse Operations Engine trying to create new screen from scratch

  • February 25, 2025
  • 4 replies
  • 98 views
E
Jr Varsity III
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I am trying to create an AWOE screen from scratch and have extended the ScanHeader to include the fields I need.   

simplified I have this (I have tried WMSScanHeader, QtyScanHeader, ScanHeader also) : 

 public sealed class TestingScanHeader : PXCacheExtension<ScanHeader>
 {

#region HdrOrderType
[PXDBString(2, IsKey = true, IsFixed = true, InputMask = "")]
[PXUIField(DisplayName = "Order Type")]
[PXSelector(
    typeof(Search<AMOrderType.orderType>),
    SubstituteKey = typeof(AMOrderType.orderType),
    DescriptionField = typeof(AMOrderType.descr))]
[PXDefault("RO")]  // Set default value to "RO"
public string HdrOrderType { get; set; }
public abstract class hdrOrderType : PX.Data.BQL.BqlString.Field<hdrOrderType> { }
#endregion

#region HdrProdOrdID
[PXDBString(19, IsKey = true, IsUnicode = true, InputMask = "")]
[PXUIField(DisplayName = "Prod Ord ID")]
[PXSelector(
    typeof(Search<AMProdItem.prodOrdID,
           Where<AMProdItem.statusID, In3<PX.Objects.AM.Attributes.ProductionOrderStatus.inProcess, PX.Objects.AM.Attributes.ProductionOrderStatus.released>>>),
    SubstituteKey = typeof(AMProdItem.prodOrdID),
    DescriptionField = typeof(AMProdItem.descr))]
public string HdrProdOrdID { get; set; }
public abstract class hdrProdOrdID : PX.Data.BQL.BqlString.Field<hdrProdOrdID> { }
#endregion

#region HdrEmployeeID
[PXInt()]
[PXUIField(DisplayName = "Employee ID")]
[PX.Objects.AM.Attributes.ProductionEmployeeSelector]
public int? HdrEmployeeID { get; set; }
public abstract class hdrEmployeeID : PX.Data.BQL.BqlInt.Field<hdrEmployeeID> { }
#endregion

#region EmployeeAcctCD
[PXString(30)]
[PXUIField(DisplayName = "Employee AcctCD")]
public string EmployeeAcctCD { get; set; }
public abstract class employeeAcctCD : PX.Data.BQL.BqlString.Field<employeeAcctCD> { }
#endregion

#region DefaultInventoryID
[PXInt()]
[PXUIField(DisplayName = "Dflt Inventory ID")]
[PXSelector(
    typeof(Search<InventoryItem.inventoryID>),
    SubstituteKey = typeof(InventoryItem.inventoryCD),
    DescriptionField = typeof(InventoryItem.descr))]
public int? DefaultInventoryID { get; set; }
public abstract class defaultInventoryID : PX.Data.BQL.BqlInt.Field<defaultInventoryID> { }
#endregion
}

When I try to load the screen I get this: 

Line 969:				{
Line 970:					PXDataSource datasource = ((PXPage)this.Page).DefaultDataSource;
Line 971:					if (datasource != null && PX.Data.Process.PXAuditHelper.IsInfoAvailable(datasource.DataGraph, datasource.PrimaryView))
Line 972:					{
Line 973:						PXCache cache = datasource.DataGraph.Views[datasource.PrimaryView].Cache;


Source File: C:\Program Files\Acumatica ERP\EdgemateDB\Controls\PageTitle.ascx.cs    Line: 971

Stack Trace:
 

[NullReferenceException: Object reference not set to an instance of an object.]
   PX.Data.PXGraph.CreateInstance(Type graphType, String prefix) in C:\build\code_repo\NetTools\PX.Data\Graph\Graph.cs:290
   PX.Web.UI.PXBaseDataSource.CreateDataGraphAsSingleton(Type type) +530
   PX.Web.UI.PXBaseDataSource.CreateDataGraph(Type type) +153
   PX.Web.UI.PXBaseDataSource.get_DataGraph() +415
   User_PageTitle.InitAuditMenu() in C:\Program Files\Acumatica ERP\EdgemateDB\Controls\PageTitle.ascx.cs:971
   User_PageTitle.Page_InitComplete(Object sender, EventArgs e) in C:\Program Files\Acumatica ERP\EdgemateDB\Controls\PageTitle.ascx.cs:318
   System.EventHandler.Invoke(Object sender, EventArgs e) +0
   System.Web.UI.Page.OnInitComplete(EventArgs e) +138
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2198

 

Basically it says that the primaryview is not initialized.  The primary veiw is the HeaderView which is 

 public PXFilter<PX.BarcodeProcessing.ScanHeader> HeaderView;

(my extension extends ScanHeader).  

If I change TestingScanHeader to a DAC that points at a table, (inherits from PXBqlTable, IBqlTable) it works and the screen loads.  But I need my HeaderView to point at an extended ScanHeader.  Any thoughts would be super thanks. 

 

 

Best answer by edwardmcgovern53

Yes I did.  Had to lol.  It was I had to recreate the graph and add the code back in bit by bit.   The references between the aspx page (using +Host and all that) was not properly connected to the c# project.  And manual fixes were not fixing it for some reason.  

Recreating the Screen and getting the connection right fixed it.      also I noticed that sometimes the error above :  f (datasource != null && PX.Data.Process.PXAuditHelper.IsInfoAvailable(datasource.DataGraph, datasource.PrimaryView)) 

would show that the datasource / PrimaryView name was my code module name.  So it was somehow confusing it.  Thats what prompted me to rebuild it and it worked. 

    hdussa

    4 replies

    hdussa
    Jr Varsity I
    Forum|alt.badge.img+1
    • hdussa
    • Jr Varsity I
    • February 26, 2025

    Hello ​@edwardmcgovern53 ,

     

    Here is the article below helps to create new screen for automated scanning warehouse operations.

    How to customize an existing screen with the new Automated Warehouse Operations Engine in Acumatica ERP 2021 R1 and later | Community

    The automated operation screen built on the barcode statemachine architecture and it is a complex structure. You may raise a development support case with Acumatica if you stuck at point.

    Hope this helps!

    ~ Harish Dussa
    Chris Hackett
    E
    Jr Varsity III
    Forum|alt.badge.img

    Hey Harish, 

    Thanks for the input.  Yes I found those articles.  Used it in the creation of States and Transitions and contrtolling logic.  Unfortunately not alot on the nuances on how to connect ScanHeader to datasources and initialization.   

    Thanks

    Chris Hackett
    Chris Hackett
    Community Manager
    Forum|alt.badge.img
    • Chris Hackett
    • Acumatica Community Manager
    • May 27, 2025

    Hi ​@edwardmcgovern53 were you able to find a solution? Thank you!

    Chris ~ Let us know how we're doing: https://forms.office.com/r/xmJUdZ1QE5 - A member helped you, please *Like* their post. A member provided an answer to your question, please mark it as *Best Answer*.
    E
    Jr Varsity III
    Forum|alt.badge.img
    • edwardmcgovern53
    • Author
    • Jr Varsity III
    • Answer
    • May 29, 2025

    Yes I did.  Had to lol.  It was I had to recreate the graph and add the code back in bit by bit.   The references between the aspx page (using +Host and all that) was not properly connected to the c# project.  And manual fixes were not fixing it for some reason.  

    Recreating the Screen and getting the connection right fixed it.      also I noticed that sometimes the error above :  f (datasource != null && PX.Data.Process.PXAuditHelper.IsInfoAvailable(datasource.DataGraph, datasource.PrimaryView)) 

    would show that the datasource / PrimaryView name was my code module name.  So it was somehow confusing it.  Thats what prompted me to rebuild it and it worked. 

    Chris Hackett
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