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

# validate\_transaction\_by\_merchant

{% columns %}
{% column width="33%" %}
Transaction Validator Based on Merchant
{% endcolumn %}

{% column %}
**Description**

The type of the current transaction is checked against the configuration of the current merchant to ensure that the merchant supports this transaction type. If the merchant doesn’t support the current transaction type, the transaction is declined.

\
**Configuration ParametersEach merchant’s configuration specifies whether each of the following transaction type is supported**

Purchase

Refund

Void

PreAuth

Cashout

Purchase And Cashout
{% endcolumn %}
{% endcolumns %}

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