I have a form where people can request articles to be shipped.
The form has 2 main datasources, a list called "TA Shipment REQ2" and a list called "Test article details".
The form is spread over 4 screens.
On one screen, the user can add multiple articles:

Add article, creates the collection:
OnSelect:ClearCollect(TestArticleCollection, {TestArticleItem: "", TiterItem: "", BatchNumberItem: "", DosesItem: 0, NumberofVialsItem: 0, ShelfLifeItem: "", PackagingItem: ""})
Save button:
OnSelect:
Patch(
TestArticleCollection,
ThisItem,
{
TestArticleItem: TestArticleItem.Text,
TiterItem: TiterItem.Text,
BatchNumberItem: BatchNumberItem.Text,
DosesItem: Value(DosesItem.Text),
NumberofVialsItem: Value(NumberofVialsItem.Text),
ShelfLifeItem: ShelfLifeItem.Text,
PackagingItem: PackagingItem.Text
}
);
Collect(
TestArticleCollection,
{
TestArticleItem: "",
TiterItem: "",
BatchNumberItem: "",
DosesItem: 0,
NumberofVialsItem: 0,
ShelfLifeItem: "",
PackagingItem: ""
}
)
Updates the collection with the new data.
On the last screen, I want the user to be able to save the request to the main SP list "TA Shipment REQ2" and at the same time, save the articles to the other list, where the MasterID column should correspond with the ID column of the "TA Shipment REQ2" list.

OnSelect:
Patch('TA Shipment REQ2',Defaults('TA Shipment REQ2'),StudyInfo.Updates,StudyPaperWorkAttachments.Updates,StudyPaperWorkType.Updates,StudyPaperWork.Updates,GMPForm.Updates,TASenderInfo.Updates,TARecipientInfo.Updates)
To write the article data back to it's SP list, I've added following to the form on my last screen, where the Submit button resides:
OnSuccess:
ForAll(
TestArticleCollection,
Patch(
'Test article details',
Defaults('Test article details'),
{
'Test Article/Material required': TestArticleItem,
Titer: TiterItem,
'Batch number': BatchNumberItem,
'Doses required': DosesItem,
'Number of Vials required': NumberofVialsItem,
'Required Minimal Shelf Life': ShelfLifeItem,
'Packaging (blister, box, number of vials per unit. ex.: 8 vials per box)': PackagingItem,
MasterID: StudyInfo.LastSubmit.ID
}
)
)
My main data is saved to the SP list "TA Shipment REQ2", what I can't get to work is having the additional article data saved to the other SP list "Test article details".
All help would be appreciated here, struggling on this since a while.