Document Id

In fileupload field, use 'target' property. It will create a new version of the document rather creating a new document.

Rahul Gundu (rahulg262)  is correct.

this is documented: here.

The complete detail for the target parameter states:

[Target] Determines the eventual location of the uploaded file. When a Folder, the uploaded file is created as a document in that folder. When a Document, the uploaded file is created as a new version of that document.

Thanks Rahul.

I have used the folder constant in the first form to upload the document and same i was using second form also due to which every time it was generating a new id for the document.
Now i have used the document id (obtained from the first form) as target in the second form and its working fine.

Hi Rahul,

The above method is working fine if i am uploading a single file, but when i am uploading multiple file then its is asking to have target value to max 1 else if I am using the folder constant then its again creating documents with different Id.

Kindly suggest.

In fileUploadField component Target will be either document or folder (It won't accept Array value). When you provide document for 'target' property, component expects only one document to create a new version of a document.
If you have multiple documents to replace, you can use looping function, which will generate multiple fileUploadComponents, you can replace one at a time.
Please try below sample code.

{
a!richTextDisplayField(
labelPosition: "COLLAPSED",
value: a!richTextItem(
text: "Replace Documents",
style: "STRONG"
)
),
a!forEach(
items: ri!doc_documentsFromFolder,
expression: {
a!fileUploadField(
labelPosition: "COLLAPSED",
maxSelections: 1,
target: fv!item,
value: fv!item,
saveInto: fv!item
)
}
)
}