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

# Boarding File Upload XML validator

> Validate your merchant boarding XML file against the Boarding File Upload XSD schema before uploading to Fexco.

Paste your Boarding File Upload XML or upload a file to check it against the Boarding File Upload XSD schema rules. The validator catches structural and syntactical errors that would cause Fexco to reject the entire file.

### Boarding File Upload XML Validator

Validates against Boarding File Upload XSD schema rules

Upload file

## What this validates

The validator checks your file against the Boarding File Upload XSD schema (V26.1), including:

* Root element structure and namespace declarations
* Acquirer ID format (1-999)
* Merchant operation types and element order (`createMerchant`, `reactivateMerchant`, `updateMerchant`, `deleteMerchant`)
* Required fields: merchant name, originator tag, file group ID, base currency, rate margin group name
* Element sequence order within each merchant
* Attribute constraints (field lengths, enumerations, numeric ranges)

> [!NOTE]
>
> This validator catches **structural errors** that would cause file-level rejection. **Data errors** (such as an unrecognized file group ID or duplicate originator tag) are only detected during server-side processing and appear in the [response file](https://docs.fexco.com/dcc/guides/merchant-boarding/board-xml.md#check-the-response-file).

## Related pages

* [Board merchants via XML](https://docs.fexco.com/dcc/guides/merchant-boarding/board-xml.md): step-by-step guide for building and submitting a Boarding File Upload file.
* [XML Boarding File Upload format](https://docs.fexco.com/dcc/developer-resources/file-formats/xml-boarding-file-upload.md): full field reference for the Boarding File Upload schema.
* [Downloadable file templates](https://docs.fexco.com/dcc/developer-resources/sample-files.md): sample boarding and transaction import files.


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