Re: Permanent I/O Error occured to DSPF

["Rory Hewitt" <roryhewitt@xxxxxxxxx>]

Charles,

A format table overflow will occur if you have more than 256 input fields on
the screen. This is *not* the problem unless you're using the DSM API's to
build screens.

Almost certainly, you're trying to display data which is < x'40'. Check your
data fields to see if some 'bad' data has crept into your database - that's
the most likely reason. Alternatively, run the program in debug and check
the data in all fields just prior to the EXFMT. Perhaps it's invalid data in
a program-to-system field (if you're using them).

BTW, technically, it's not *all* characters < x'40' which cause problems -
it's just *certain* characters < x'40' - those which are defined as 5250
data stream control characters, such as x'1D', for instance. So x'1F'
displays as a reverse-image cursor, for example.

Rory

On Wed, Oct 8, 2008 at 1:59 PM, Charles Wilt <charles.wilt@xxxxxxxxx> wrote:

> All, I'm getting an error during I/O to a display file:
>
>
> <snip>
> Cause . . . . . :   The condition was caused by the program output data
>  containing below hex 40 or too many input fields.  More information on the
>  negative response code can be found in either the IBM 5494 Remote Control
>  Unit Functions Reference (under negative responses) or the SNA Formats
>  Manual (under SENSE or LUSTAT codes).  Invalid data (below hex 40) may
> have
>  occurred in one of the following ways:
>    Invalid parameter data passed in variable to command language program.
>  Variable is used in SNDPGMMSG command.  Command fails when data is
>  displayed.
>    Hexadecimal characters below hex 40 entered into TEXT parameter of
> create
>  command.  Display command for object fails when object parameters are
>  displayed.
>    Data base record containing invalid data displayed by the application
>  program.
>    Failure to specify RSTDSP(*YES) when alternating displays from more than
>  one file to the device, where both files have input fields.
>
> I've looked at the dump, I don't see any invalid characters (< x'40').
>
> I looked up the sense code and it says:
> 10050129 = Format table overflow
>
> Does anybody have an idea of what's wrong?
>
> Thanks!
>
> Charles Wilt