Why is the CSM TC started task failing upon startup with the error: MME0260S - Process terminated by signal 0x12 ?

Document ID : KB000012525
Last Modified Date : 14/02/2018
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Question:

After installing CSM 6.0 in our new z/OS 2.2 environment, why is the initial startup of the CSM TC started task failing with the error:

MME0260S - Process terminated by signal 0x12 ?

Environment:
CSM 6.0, z/OS 2.2
Answer:

The error: MME0260S - Process (pid) terminated by signal 0x12 is normally caused by the SYS1.SIEALNKE library (containing the JVMLDMxx module 

as referenced in the CSM TC started task JCL) not being APF authorized.  With the APF authorization of the SYS1.SIEALNKE library, the MME0260S  error

condition is alleviated.