In this phase, when the client process is about to exit, on behalf of the current context and all associated threads, a thread ends its application association by calling tpterm(). Like other ATMI functions, tpterm() operates on the current context. It affects all threads for which the context is set to the terminated context, and terminates any commonality of context among these threads.

A well-designed application normally waits for all work in a particular context to complete before it calls tpterm(). Be sure that all threads are synchronized before your application calls tpterm().