For MVS™ to process broadcast functions properly, you must use the following return code conventions for function routines that handle broadcast calls. When a routine returns control to the SSI:

• Set register 15 to 0.
• Set the SSOBRETN field in the SSOB control block to one of the following:

  Return Code (Decimal)

  Meaning

  0

  The function routine recognized the request but did not process it.

  4

  The function routine recognized the request and processed it.