What is an external (dynamic) breakpoint in ABAP debugging?

An external breakpoint (set through transaction SAAB or directly via debugger menus) is similar to a session breakpoint in that it's set outside the source code, but it can be configured to apply more broadly — for instance, triggering for a specific user across any program, or persisting for a defined time window rather than only your current session.

//  transaction SAAB lets you configure:
//  - which user(s) the breakpoint applies to
//  - which program/line
//  - an expiration time for the breakpoint

This is particularly useful for debugging background jobs or processes triggered by another system, where you can't simply click "execute" yourself and watch it run interactively — setting an external breakpoint tied to the relevant user or program lets the debugger catch and pause that execution whenever it eventually happens, even without your direct involvement in starting it.

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