42In some areas there is a risk that if a single CORS site isunavailable, your OPUS-RS job will not be processed.Caution and planning are suggested for OPUS-RS jobs.OPUS Error Messages and FailuresThere are lots of possible error messages when processingOPUS solutions. It is our experience that almost all errors fallinto a single category:“There is not enough nearby CORS data to effectivelyprocess your occupation…yet.”In general, the solution is nearly always the same:“Wait until more data becomes available and resubmityour job.”If you are processing OPUS-RS jobs in an area with very fewCORS stations, and one CORS station was offline, waiting willnot help. OPUS-Static is the solution for locations whereOPUS-RS is not dependable.CORS stations can report observations hourly or daily. Insome areas (typically UNAVCO PBO sites) most of the sitesreport once at the end of each day (GMT.) So data that isneeded to process your job is not available until 4:00 amGMT on the day after you collect data.