REST request properties are the same for different messages sent at exact same time (to millisecond)

Hi

We are currently experiencing issues with requests sent to a REST service on Oracle SOA 12.1.3.0. When multiple messages are sent at the same time from different requestors the request properties of the messages are being mixed up. This only occurs when the messages are sent at the exact same time to the millisecond. I can replicate the issue at will using JMeter the send multiple requests.

This is the request in JMeter

POST http://xxxxxxxxxxx/soa-infra/resources/XXXX/RestHeaders/RestService/306924

POST data:

{

  "status":"complete",

"comments":"this is a test"

}

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Request Headers:

Connection: keep-alive

Content-Type: application/json

Accept: application/json