To see your profile, enter after the READY message:

 READY
PROFILE

You then see your profile, which might be similar to the following one:

IKJ56688I CHAR(0) LINE(0) PROMPT INTERCOM NOPAUSE 
MSGID MODE WTPMSG RECOVER PREFIX(TUSER01) 
PLANGUAGE(ENU) SLANGUAGE(ENU) VARSTORAGE(HIGH)
IKJ56689I DEFAULT LINE/CHARACTER DELETE CHARACTERS IN EFFECT
FOR THIS TERMINAL
 READY

Most likely your profile was preset by a system programmer at your installation and most of the operands should not be changed. However, two operands might be of interest to you:

• NOMSGID/MSGID

  This operand determines whether you see a message identifier with a line mode TSO/E message. The message identifier appears at the beginning of the message and is a way to reference the message in z/OS TSO/E Messages, SA32-0970.

  If your profile has the NOMSGID operand, a line mode message appears as follows:

  NO INFORMATION AVAILABLE

  If your profile has the MSGID operand, a line mode message is preceded with a message identifier as follows:

  IKJ56760I NO INFORMATION AVAILABLE

  To change your profile, enter the PROFILE command followed by the changed operand you want in your profile. For example, to change your profile from NOMSGID to MSGID, enter after the READY message:

   READY
  PROFILE MSGID

  Then when you re-display your profile with the PROFILE command, you see the changed operand.

• PREFIX

  The PREFIX operand determines the default first qualifier of your data sets. When you do not specify a first qualifier, TSO/E assumes it is your prefix. Most profiles have a person's user ID as the prefix.

  For more information about the PROFILE command, see z/OS TSO/E User's Guide, SA32-0971.