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Hi Steve,

There is one program that generates the check number. It is a simple RPG
that chains the file by company only, adds 1 to the existing number and
places this on the screen for the user.

Are there two files (a control file holding the last check number, and the detail file containing the details including the newly-created check number) or are you getting the last check number from the detail file itself? The point being that if it is a timing issue and the program is failing between the moment the detail file gets its record and the control file gets it's, then you have a duplicate situation.

Can you lay out a brief outline of the timing of the events along the lines of:

1 co   chain control
2      add   1       check
3      update control
4      exfmt
... time passes
5 key  chain  details
6      write  details

I was told that for checks, they don't
> indicate the division ever, only
company.

If the database keys are co, div, batch, check then that information is not correct. It may be what is _desired_ but the database does not enforce that rule.

I still want to know what happens to
> the file lock, when a term. freezes.

What does it mean when you say 'term. freezes?'
  --buck

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