If you decide to run both tests (INDEXTEST and DATATEST), INDEXTEST runs first. If INDEXTEST finds major structural errors, DATATEST does not run, even though you requested it. This gives you a chance to review the output from INDEXTEST and to decide whether you need to run DATATEST.

If you want to run DATATEST unconditionally, you must specify the NOINDEXTEST parameter in the EXAMINE command to bypass INDEXTEST.