Message-Level Validation {#um-intro-mlv2}
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Message-level validation (MLV) is a script-based, field-level validation against `Cybersource` specifications.  
Your PTP uses amount-based test triggers to send transactions into a test environment and the Visa Certification Management System for decryption. The test results are XML or RESTful output, `Business Center` test transactions, and log prints.  
`Cybersource` uses these activities to validate the results:

* Cross edit checks
* Data element validation
* Interchange compliance
* Data mapping validation