# Trans Timestamp

- JSON Key is `transTimestamp`, mandatory

<table id="bkmrk-field-type-mandatory"><thead><tr><th>Field</th><th>Type</th><th>Mandatory</th><th>Description</th><th>Memo</th></tr></thead><tbody><tr><td>traceNo</td><td>String</td><td>Yes</td><td>Original trace no.</td><td> </td></tr><tr><td>send</td><td>String</td><td>Yes</td><td>Send timestamp</td><td>Unix Format,Unit：seconds</td></tr><tr><td>recv</td><td>String</td><td>Yes</td><td>Receive timestamp</td><td>Unix Format,Unit：seconds</td></tr></tbody></table>