Do you get that message while recording with NeoLoad or when you are replaying a recorded user path?

Could you provide more information with maybe some screen shots?

Thanks

What did you get as response during the recording for that request?

Also looking at your screen shot it seems that you might have some dynamic id's to correlate like fileId and TRANSACTIONID.

Have you correlated them?

My question was to check on the Design section the recorded response to make sure that you did not get an HTTP 404.

Otherwise i think that your issue might be due to the fact that you have to correlate those two Id's. That would explain the HTTP 404.

From the Design section use the Flag feature to search for those ID's on all the server responses. The goal would be to create variable extractors if they are dynamic.

If you do not know how to do that please look at our Neotys Academy here where you have a course related to dynamic parameters.

Ok so it's definitively a correlation issue. I can't provide more details based on your screen shots. You should make another recording of that same transaction and compare the request that is failing from both recording to check if the ID's are differents. If yes then it means that you need to correlate them using variable extractors as explained in our Academy web site.