Flex table error - Tried to retrieve Flex Table data from a cell not containing an Flex Table map

Hi,

I am using the FJSON parser for the bulk loader into a flex table

I am getting the error :-

 Error Code: 5861, SQL State: VP001]  [Vertica][VJDBC](5861 ......Tried to retrieve Flex Table data from a cell not containing an Flex Table map

when trying to retrieve values from the flex table using maplookup/mapitems for array data.

Is this error caused by bad JSON data ?

Is there an easy way to find the offending record(s)?

Thanks.