'-5002: There is a difference between the document total and its components' when creating DownPaymentInvoice

I'm on a mission to see how many errors I can encounter when building a down payment invoice via DI-API. My latest encounter came at me like this.

'-5002: 10000100 - Document total value must be zero or greater than zero' when the Down Payment Invoice (DPI) .add() phase was encountered for just 2 orders out of 70+. The Sales Order (SO) was successfully created.

So I adapted my code to include:

DownDOC.DocTotal = SaleDOC.DocTotal

This then gave me a new error.

'-5002: There is a difference between the document total and its components'

So I figured I would attempt explicitly define line and tax totals for the DPI.

For iLoop As Integer = 0 To SaleDOC.Lines.Count - 1     SaleDOC.Lines.SetCurrentLine(iLoop)     With DownDOC.Lines          If .BaseEntry <> 0 Then               .Add()          End If          If SaleDOC.Lines.TreeType <> BoItemTreeTypes.iIngredient Then               .BaseEntry = lngDocEntry               .BaseType = BoObjectTypes.oOrders               .BaseLine = iLoop               .LineTotal = SaleDOC.Lines.LineTotal 'ADDED               .TaxTotal = SaleDOC.Lines.TaxTotal 'ADDED          End If     End With
Next

Yet the '-5002: There is a difference between the document total and its components' error persists.

Since all my other orders import with no issue, I investigated the two orders and determined that these two both contained products that were out of stock. I tested creating the SO's manually and was prompted with 'Item Availability Check'. Is there some other action happening with the DI-API when an out of stock item is encountered?