Loadrunner integration in Loadtesting - Unique transaction question

Hello,

We are currently working on a Loadrunner script for which the "Loadrunner script converter" does not work (Java VUser for simulating a Mobile Client with security etc...). We will build the headers ourselves, in the end Web request are being fired.

Looking at the funtion which normally gets created in a script which was converted I have a question :

void addDynaTraceHeader(char* header){
    char* headerValue;
    int headerValueLength;
    int vuserid, scid;
    char *groupid, *timestamp;
    char* vuserstring=(char*) malloc(sizeof(char) * 10);

    web_save_timestamp_param("TimeStamp", LAST);
    timestamp=lr_eval_string("{TimeStamp}");

    lr_whoami(&vuserid, &groupid, &scid);
    itoa(vuserid,vuserstring,10);

    headerValueLength = strlen(header) + 4 + strlen(vuserstring) + 4 + strlen(timestamp) + 1;
    headerValue = (char*) malloc(sizeof(char) * headerValueLength);
    strcpy(headerValue, header);
    strcat(headerValue,";VU=");
    strcat(headerValue,vuserstring);
    strcat(headerValue,";ID=");
    strcat(headerValue,timestamp);

    web_add_header("X-dynaTrace", headerValue);
    free(headerValue);
    free(vuserstring);
}

As far as I can see the header is made unique by the Timestamp in the above scenario.

Is it necessary to submit the ID= & VU= in the header for dynaTrace to see this request as unique? I can think of a high load scenario's where both will be the same.

By using a scenario with Groups the VU= nr would be the same, under high load the ID= (timestamp) could be the same effectively sending the same header for two different request, NA could also be the same.

Is this a problem, or is the dynaTrace agent capable of identifying these as unique requests anyway?

Thanks,

Patrick