Does CA Librarian use the CCW(Chanel Command Word) via EXCP instruction ?

Document ID : KB000016487
Last Modified Date : 14/02/2018
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Introduction:

In an environment using DFSMS/rmm, a problem arises in that it is not possible to execute processing of a program that meets a specific condition.

Question:

Does CA Librarian of MVS and MSP use the CCW(Chanel Command Word) via EXCP instruction ?

Environment:
z/OSMSPLibrarian R4.4
Answer:

Librarian of MVS and MSP does not use EXCP instruction.
So, Librarian does not use the CCW via the EXCP instruction and does not refer to CCW.