SB options or parameters provided by several sources

If you provide the same SB option or parameter in more than one place, IMS determines which option to enforce by following a set order of precedence.

If you provide the same SB option or parameter in more than one place, the following priority list applies (item 1 having the highest priority):

1. SB control statement specifications (the nth control statement overrides the mth control statement, where n > m)
2. PSB specifications
3. Defaults changed by the SB Initialization Exit Routine
4. IMS defaults