Oracle Error Message
ORA-54655: CREATE_TIN: scratch tables/views(string) exist and need to be dropped
Reason for the Error
Transient tables from previous CREATE_TIN operation still existed.
Solution
Delete the invalid TIN from the base table (for cleanup of scratch tables), and initialize and create the TIN again. Alternately, use SDO_UTIL.DROP_WORK_TABLES with oidstring as its parameter.