Why is there a scheduler / timer on Revel however there is no history showing in the logs? If you have a system that is calling REVEL pos to check on an update then we enable the timer so you can tell DSYNC when we should be checking the revel system. If there is NOT a change for the API call you have specified then there will NOT be an error log showing. If you would like to check if the data integration is still working you can always use the DSYNC debug URL to check the last time the system was called and the response. Here is a link to the DSYNC debug route.