> For the complete documentation index, see [llms.txt](https://docs.docbits.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.docbits.com/administration-and-setup/workflow/cards-overview/and/document-field/field-is.md).
# Field is
## When to use it
Use this card to check whether a document field is empty or missing, for example when an invoice has no invoice number and needs an additional check. This is a condition; configure the subsequent action separately.
**Where:** Standard workflow → additional conditions (AND) → Document Field.
## Configuration — version 2
| Setting | Example value |
| ------------ | -------------------------------- |
| Field | `invoice_id` — invoice number |
| Field status | Empty or missing (`field_empty`) |
Select an actual field configured in your organization. The `field_not_empty` option checks whether the field contains a value.
## Practical example
| Example value | Expected result for `field_empty` |
| ---------------------------- | ---------------------------------------------------- |
| Empty or missing field | Condition met |
| `DEMO-001` | Condition not met |
| Number present but incorrect | Condition not met — the field still contains a value |
These are expected-result examples. Add an appropriate content condition to validate the number itself; this card checks the field state. In version 2, leading and trailing spaces are removed from text before checking whether the field is empty.
## Administrator example video
When I use the card, where to find it and how to detect missing invoice numbers. The administrator, office and voice are synthetic; the demonstration shows the real DocBits interface of a test account. The examples show expected results.
{% embed url="" %}
[Open video with English captions](https://docbits-videos.fra1.cdn.digitaloceanspaces.com/settings-assistant/workflow-card-field-status-admin/v1/en.html)
[Read transcript](https://docbits-videos.fra1.cdn.digitaloceanspaces.com/settings-assistant/workflow-card-field-status-admin/v1/en.txt)
---
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