Integration Error: failed to run action. error occurred during BTXML script processing. Number of copies sourced by data source.
When running a BTXML script, the Integration errors out with a message about the copies being sourced by a data source or that they must be a constant value.
BarTender Integration builder
When you open up the label, you'll likely find that the copies (or serial numbers if there's a serialization) has a database field in it:
Remove the database field and return it to a constant value
Once you do this, the error message goes away.