Field not found lookup error

[GCC Consulting]

Had this error popup at a client's site the other day.

The odd thing about the error was it was pointing to a processing line that
cleared two arrays.

If:
Then: clear instur;clear reade
      ^

When I saw this, by using the debugger, I realized that the problem was caused
by trying to clear an array mapped to a lookup file(reade was the array mapped
to the file) and the lookup failed - no record for this order.

This is logical, but it can be a "gotch" 

Richard Kreiss
GCC Consulting