If you have applications issuing IXGWRITE and IXGBRWSE requests concurrently for the same coupling facility log stream, ensure that the browse requests are issued only for committed log data. Data is committed to the log stream when system logger returns control to the application following an IXGWRITE request with a successful return code. This is important because data can be lost due to system or coupling facility failure between the time data appears on the structure associated with the log stream and a commit occurs. If you read uncommitted data that is subsequently lost, applications sharing the same log stream can have different versions of log data. See also When is data committed to the log stream?.