Message Oracle KUP-11008 - conversion error loading table string.string partition string

ERRORconversion error loading table string.string partition string
CAUSEA row could not be loaded into the table because there was a conversion error for one or more columns in a row.
ACTIONSee the message that follows for more information about the row that could not be loaded. To avoid this error, make sure the definition of the table being loaded matches the definition of the table being unloaded.