Rows can be logically deleted for load-isolated (LDI) tables and during certain join index operations. These rows are marked for deletion, but not immediately physically deleted from the database. After the data is restored to the destination system, tables with these rows cannot be revalidated until the rows have been physically deleted.
The post_data_restore script returns a Failure 9899 error when it encounters logically deleted rows. Use the information in the script output to note the tables containing logically deleted rows, and issue an SQL ALTER TABLE RELEASE ROWS statement for each affected table. See Teradata Vantage™ - SQL Data Definition Language Syntax and Examples, B035-1144.