UploadWidgetOnPreUploadResult

This object should be returned by the onPreUpload callback in the UploadWidgetConfig.

Structure

{
  "errorMessage": String,
  "transformedFile": Object
}

{
  "errorMessage": "Uh oh! This file failed our custom validation."
}

Validation error to display to the user for this file.

The file will not be uploaded if a value is returned for this field.

Example: "Uh oh! This file failed our custom validation."

Type: String

An alternative file to upload instead of the original file.

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