> For the complete documentation index, see [llms.txt](https://docs.fieldmotion.com/fieldmotion-api-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fieldmotion.com/fieldmotion-api-docs/purchaseorder/_cancel.md).

# \_cancel

Cancels a specified PurchaseOrder.

### Parameters

#### id

The ID of the PurchaseOrder to cancel.

#### Example

```
FM_api('PurchaseOrder_cancel', ['id' => '1']);
```

#### On Success

```
{'ok':1}
```

#### On Failure

If the User is not logged in:

```
{'error':'not logged in'}
```

If the PurchaseOrder ID is not supplied:

```
{'error':'no purchase order ID'}
```