"table is not a change table"
*Cause: User attempted to execute the DROP_CHANGE_TABLE procedure on a
table that is not a CHANGE table. This can also occur when
a CHANGE table object has been orphaned. CHANGE tables can become
orphaned after a CREATE_CHANGE_TABLE failure or an incomplete
*Action: Check spelling. If error was due to an incorrect name, then retry
the procedure using the correct name. To drop a table that is
not a CHANGE table, or an orphaned CHANGE table, use the
DROP TABLE DDL command instead.