> After starting the TSO Admin client and after entering the administrator's
> userid I get the following messages in the dsmerror.log:
>
> TcpOpen(): socket(): errno = 156
> TcpOpen: Error creating TCP/IP socket.
> sessOpen: Failure in communications open call. rc: -50
> ANS1017E Session rejected: TCP/IP connection failure
> ANS8023E Unable to establish session with server.
>
> When one of our Systems programmers tries it, it works perfectly.
> We both use the same options file and Rexx exec.

Are you and the systems programmer using the same client profile dataset? This
dataset contains information client software needs in order to connect to the
TCP/IP address space. Client software running under TSO uses the following
search order to locate this dataset:

1.Dataset already allocated to DDNAME SYSTCPD
2.userid.TCPIP.DATA
3.SYS1.TCPPARMS(TCPDATA)
3.hlq.TCPIP.DATA

where hlq is a high level qualifier selected during the installation of the
TCP/IP software.