The return code specifies the general result of the callable service. Appendix A. ICSF and TSS Return and Reason Codes lists the return codes.

The reason code specifies the result of the callable service that is returned to the application program. Each return code has different reason codes assigned to it that indicate specific processing problems. Appendix A. ICSF and TSS Return and Reason Codes lists the reason codes.

The length of the data that is passed to the installation exit. The length can be from X'00000000' to X'7FFFFFFF' (2 gigabytes). The data is identified in the exit_data parameter.

The data that is passed to the installation exit.

A 64-byte string of an external token of a key to change. It is in exportable form.

ICSF supports two methods of wrapping the key value in a symmetric key token: the original ECB wrapping and an enhanced CBC wrapping method which is ANSI X9.24 compliant. The output source_key_token will be wrapped in the same manner as the input source_key_token.

A 64-byte string of an internal token or label of the exporter KEK used to encrypt the key contained in the external token specified in the previous parameter.