Required Field for Timeout Voids {#mt-void-fields-matrix}
=========================================================

This table provides information about the field required for timeout voids.

| REST API Field                            |                                                  Timeout Void                                                   | Information/Value                                                                                                                                                                                            |
|:------------------------------------------|:---------------------------------------------------------------------------------------------------------------:|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| clientReferenceInformation. comments      | ![](/content/dam/documentation/cybs/en-us/common/images/circlecheck-filled.svg/jcr:content/renditions/original) | For this value, see [Mass Transit Transaction Types](/content/cybsdeveloper2021/amer/en/docs/vas/en-us/urban-mobility/developer/ctv/rest/mass-transit/um-processing-emv-vpc/um-processing-trxn-types.md ""). |
| clientReferenceInformation. transactionId | ![](/content/dam/documentation/cybs/en-us/common/images/circlecheck-filled.svg/jcr:content/renditions/original) | Set this field to the unique clientReferenceInformation.transactionId value from the transaction that timed out.                                                                                             |
[Required Fields for Mass Transit Timeout Voids]