validationInformation.referenceID {#valid-info-reference-id-main}
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Reference ID generated to track each request. This ID is returned in the response header.  
The reference ID must be a UUID value compliant with RFC 4122.

Specifications {#valid-info-reference-id-main_Specifications}
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* **Data Type:** String
* **Data Length:** 36

Mapping Information {#valid-info-reference-id-main_Mapping}
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* **REST API Field:** validationInformation.referenceID
* **SCMP API Field:** ecp_avs_reference_id
* **Simple Order API Field:** ecAVSReply_referenceID