> ## Documentation Index
> Fetch the complete documentation index at: https://developers.pleo.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Vendor Tagging in Export Items

> You can add vendors in an export item, only when:

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* The specific company has synchronised the list of vendors existing in their ERP/accounting system with their Pleo account. For more information, see [Vendors API](/reference/vendors-api-overview).
* The integration supports the capability of vendor tagging. If yes, `vendorBasedBookkeeping` is set to `True` in the `POST Create a new export job` endpoint.

## Vendor Tagging Enabled for Specific Expenses

You can tag vendors in an export item, when the expense belongs to any of the following types:

* `card_purchase`
* `fee`
* `chargeback`
* `refund`
* `cashback`
* `invoice`
* `invoice_payment`
* `overdraft`

## Vendor Tagging | Mandatory or Optional

Based on what the bookkeeping method is, tagging vendors in an export item is either **mandatory** or **optional**:

* If the bookkeeping method is `accounts_payable`, tagging vendors in an export item is **mandatory** — this helps to bookkeep the expense in the correct vendor account as maintained in the external ERP/accounting system. If `vendorBasedBookkeeping` is enabled, the `GET Get Export Items` endpoint includes vendor and bookkeeping data points.
* If the bookkeeping method is `journal`, tagging vendors in an export item is **optional**.

<NoteCallout title="Note">
  - If there is any problem in bookkeeping the export item to the correct vendor account (like, when the vendor `code` is not matching) in the ERP/accounting system, the integration must send a request to the `PUT Update Export Job Items` endpoint with `failureReason` specifying that vendor record could not be identified and `failureReasonType` set to `accounting_system_validation_failure`.

  - In the Export API Version 2, you might find the `supplier` object, instead of `vendor`. To bookkeep the export item using the `supplier` object, ensure that any of the following information is present to find the appropriate vendor in the ERP/accounting system:

    * `code` matching the supplier ID as recorded in the accounting system
    * `account` matching the supplier account number as recorded in the accounting system
    * `taxIdentifier` matching the tax identifier of the supplier as recorded in the accounting system
</NoteCallout>