The INDEX subscription option uses the GETPOST command rather than a database job by default. INDEX_VIA_GETPOST can be used to control this default.
INDEX_VIA_GETPOST = 0
The GETPOST command requires fewer resources and is easier to use for non-technical users. The old database job format is still supported. The old behavior can be restored by adding 'INDEX_VIA_GETPOST = 0' to LOCAL SYSVARS, but this is not recommended.