When workflows process larger amounts of data, data is stored in a separate file, rather than the execution logs. This data can be accessed via API or from UI.
If the data has been written to file, you will see the Download data contents button when viewing the execution log.
Open Devtools (F12) in your browser
Copy the Id Token into Postman as Bearer token.
In the workflow logs, you will see a reference to the file under payload.result.dataFileKey
Copy the workflow id, and filename into the following URL format: