Populate InventoryID while searching for cross reference alternate ID - acumatica

Question

I have been trying to select inventory using 'UsrAlternateIDs' (custom field) value (which are concatenation of cross reference value of stock items). This is where I am trying to implement.
So, if I type in correct InventoryID, it would select me the inventory which exists now. But now, whatever value I type, first it would check if it is the correct inventoryID and select inventory for me. if not it should look for alternateids of inventory item and if I type whichever (separated from ';') it should select inventory item for me.
Here is the code snippet I have written:
protected void FSAppointmentDetPart_InventoryID_FieldUpdated(PXCache cache, PXFieldUpdatedEventArgs e)
{
var row = (FSAppointmentDetPart)e.Row;
if(row==null) return;
InventoryItem item = PXSelect<InventoryItem, Where<InventoryItem.inventoryID, Equal<row.InventoryID>>;
if(item!=null)
{
InventoryItem itm = PXSelect<Inventory, Whenre<InventoryItem.alternateIDs, Contains<row.InventoryID>>;
if(itm!=null)
{
}
else
{
throw new PXException("Invalid Inventory Item");
}
}
//sender.SetValue<ContactExt.usrCreditRecordVerified>(e.Row, false);
}
But it is not working. What I am I missing?
Besides, I also looked into the Business logic of the page 'Purchase Orders' which would look for column AlternateIDs and work if is not concatenated and only single value. But the code doesn't make much sense to me. It would be great if you could explain that to me.
Thank you.

Answer 1

If you are trying to make your selector search for both inventory id and the alternate id, consider using the
CrossItemAttribute
Sample usage can be like this, here INPrimaryAlternateType.CPN defines the type of alternate id.
#region InventoryID
public abstract class inventoryID : PX.Data.IBqlField
{
}
protected Int32? _InventoryID;
[CrossItem(INPrimaryAlternateType.CPN, Filterable = true)]
public virtual Int32? InventoryID
{
get
{
return this._InventoryID;
}
set
{
this._InventoryID = value;
}
}
#endregion
EDIT
Tried to use as an unbound field
#region InvID
public abstract class invID : PX.Data.IBqlField { }
[PXInt]
[CrossItem(DisplayName="TEST")]
public virtual int? InvID { get; set; }
#endregion InvID
Item master info
Unbound field, Keys in the barcode
System Finds the correct Item