> For the complete documentation index, see [llms.txt](https://docs.zipwire.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.zipwire.io/zipwire-collect/machine-vision/failure-to-recognise.md).

# Failure to Recognise

How to handle 'Unknown' documents.

Upon upload, the AI will try to detect the kind of document and match it to an open collection.

When using either the [Bulk Upload](/zipwire-collect/bulk-upload.md) feature or when sending via WhatsApp, Zipwire Collect relies on just the AI to determine what a file or photo contains. If it fails to recognise the doc, then it defaults to a type "Unknown" and will not be matched to a collection.

### Give it a hint

When using the **Pick file** action for the item within a collection request on the **Open** tab, the AI will be told to expect a document of the type being asked for, like a hint.

If it cannot determine it from looking at the image and text, Zipwire assumes the user has, for example, picked a passport file for the passport item.

In other words, for tricky files, use the **Pick file** button on the collection itself.

[What the Respondent Sees at Their End](/zipwire-collect/what-the-respondent-sees-at-their-end.md)