Pre-Invocation
Pre-Invocation event points execute before a child process is invoked.
This event point is most useful for executing PASS statements to send information to a child process. (A corresponding RECEIVE statement can be placed anywhere in the child process, but is generally located in Start of Process.) Since the Pre-Invocation event point can be executed multiple times you should consider using the --- CLEAR PASS LIST routine to ensure only the variables you wish are included.
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