I don’t know of an app that will automatically do this function.
A pretty simple program could be written to report files, record #, columns # containing ‘+’s.
It would be a bit harder to included the field names.
It would also be easy to replace all # with ‘ ‘, (assuming all the fields in error are char type.)
Since you don’t see the +++ with dsppfm, the +++ isn’t in the physical record
But you know which field shows it when you select * from myfile. That field is numeric???
It contains a bad value.
What to do?
1. Check the journals for that file – they should identify the jobs/programs that changed the data and you should be able to find the one event that put bad data into that field.
2. That program doesn’t describe that field correctly.