The automatic plan generation tries its best to service all scheduled visits within given vehicle schedules. Sometimes, the configuration turns out to be so demanding that not all sites can be serviced as requested. In such cases the system will raise an alert, which will persist as long as scheduled visits are projected to be left out from plans. Left at its own, the system may still re-decide which sites to service and which to leave out.
The user is expected to resolve scheduled visit conflicts by changing the configuration according to their best judgement. After making configuration changes, it may take a few hours before the system updates plan alerts.
Lacking capacity 
When a content type reports lacking capacity for scheduled visits, the automatic planner has not found a way to fit all scheduled visits to given vehicle hours.
The user is advised to:
1. review that given plans on scheduled visit days are servicing a reasonable number of scheduled visits,
2. either add vehicles/hours/overtime to service the missed scheduled visits, or decide to remove/reschedule some scheduled visits.
If more capacity is added but the number of missed scheduled visits is not going down, it is possible that the capacity added is not compatible with the scheduled visits. For example, if all scheduled visits have site opening hours in the morning or they can be served with only one particular vehicle, adding afternoon shifts or overtime on a different vehicle will not help. A good rule of thumb is to increase capacity in vehicle types and hours that can serve the missed forced visits listed on alerts page.
Unplannable visits 
If a scheduled visit is listed as unplannable, there is some misconfiguration that prevents the automatic planner from servicing the site on given day. A typical situation is that there is not enough time to drive even the single-collection route depot->site->dump->depot with any of the vehicles compatible with this container model.
Basic troubleshooting:
1. identify which vehicle should be able to collect the scheduled visit,
2. verify that the vehicle has a shift available on the scheduled visit day,
3. verify that the vehicle is configured to support the container model to be collected at site,
4. estimate rough times (+-30 min) of how one would visit depot->site->dump->depot when collecting only this one problematic site, e.g. 8:00 depot, 8:30 site, 9:30 dump, 10:00 depot.
5. check that configured site and dump availability times allow these visit times at site and dump.
Going through these steps often shows what makes the site visit impossible, allowing the user to decide what the appropriate fix is. If the timings still look possible, describing the expected vehicle and timings in a support ticket will speed up support investigations.