Thanks for the suggestion
The clips do load into FCP without any errors I therefore imagine that the correct codecs are available. The error messages only pop up in XDCAM Transfer. The footage is visible and can be evaluated but when I save the changes it comes up with the second error message

The result of the problem is that when I make changes in clip evaluation in XDCAM Transfer I’m unable to save them and have to start all over next time around.