consumerAuthenticationInformation. messageCategory {#cons-auth-info-message-category}
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Category of the message for a specific use case.  
Possible values:

* `01`: PA (payment authentication).
* `02`: NPA (nonpayment authentication).
* `03-79`: Reserved for EMVCo future use (values invalid until defined by EMVCo).
* `80-99`: Reserved for directory server use.

Specifications {#cons-auth-info-message-category_Specifications}
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* **Data Type:** String
* **Data Length:** 2

Mapping Information {#cons-auth-info-message-category_Mapping}
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* **REST API Field:** consumerAuthenticationInformation.messageCategory
* **SCMP API Field:** pa_message_category
* **Simple Order API Field:** payerAuthEnrollService_messageCategory