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Messages SLS0453I and SLS0653I - Unable To Vary Station Online (Doc ID 1016878.1)

Last updated on AUGUST 04, 2020

Applies to:

Sun StorageTek Host Software Component (HSC) - Version 6.2 and later
Sun StorageTek Enterprise Library Software (ELS) - Version 7.0 and later
IBM z/OS on System z

Symptoms

Unable to vary station online
Unable to vary ACS online
Error code 6593456A
SLS0453I LMU error XXXXXXXX varying ACS AA | station XXXX online
SLS0691I Invalid UCB for station XXXX
SLS1658E ACS AA: CCCCCC station C...C connected to LMU y as ZZZZZZ
SLS0653I SHPG of station xxxx failed

Changes

There are multiple changes that could result in this type of problem, such as:  upgraded microcode, added a new host to the library environment, a new ACS or LSM was added.

Cause

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