011f0007:3: http_process_state_prepend - Invalid action EV_INGRESS_DATA during ST_HTTP_PREPEND_HEADERS

Thx Richard for the response. I saw that links already. Is there a way we can use irule to capture the data when that error is thrown?

You would have to capture the data at a TCP level and the HTTP filter is killing the connection before the iRule. I would look at HTTP post with the wrong content length, that is were I have seen it in the past.