` Trapping Errorcode() 40 -- duplicate record message (Charles Ballard ) - Icetips Article

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Par2: Trapping Errorcode() 40 -- duplicate record message
1999-10-28 -- Charles Ballard

legacy:  "When Completed, Before Writing to Disk"
ABC: "TakeCompleted, before parent"

Use the 'Duplicate' function to determine if writing the current record would 
create a duplicate key or you could write your own add(file) statement and 
then check for DupKeyErr.

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Templates, Tools and Utilitiesfor Clarion Developers

Icetips Article

Templates, Tools and Utilities
for Clarion Developers