Mova V50 Ultra

After a perfect mapping, unit cleaned everything..next day, wanted to clean bath, MB and hall....unit started and went to bath room....then to MB....I stoped cleaning and sent back so I could put in a low area....starting new cleaning and robot started cleaning the hall then went back to dock.....I then selected the bath, mb and hall....unit came out of dock, started and said "could not proceed to specific cleaning and returning to dock....I then reset robot but still and continuing to get the cant proceed move obstacles.....unit is free of any obstacles...do I need to remap?

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oh, by the way......this is a brand new unit