How were two members booked into the same shift?

It is possible for two members to be in a single shift with the status 'SHIFT BOOKED' if within a very short timeframe (several milliseconds), both members accept a broadcasted/shift released shift. As a result, this unavoidable technical issue needs to be resolved by pulling out both members and then booking the correct one in.

You are able to do this with the shift ratio function by selecting the shift and then using member pull out or error and it will remove the members out