Mapping Columns & Running
After uploading your CSV, you will map your columns before the screening job starts.
Step 1 — Upload your file
On the Batch Screening page, drag and drop your .csv file onto the upload area, or click the area to open a file picker. TradeLasso will parse the file and extract the column headers from the first row.
If the file cannot be parsed (wrong format, missing headers, or empty), an error message will explain the issue. See Preparing Your CSV File for help.
Step 2 — Map the entity name column
Once the file is parsed, TradeLasso advances to the Column Mapping step. You will see a dropdown for each required field:
- Entity Name (required) — Select the column from your CSV that contains the names you want to screen. This is the only required mapping.
- Country (optional) — Select the column that contains country information, if present. Providing this improves match accuracy.
Note
TradeLasso will attempt to auto-detect the entity name column based on common header names (e.g., "Name", "Company", "Entity"). Review the auto-detected selection before proceeding to make sure it is correct.
Step 3 — Start screening
Once your columns are mapped, click Start Screening. TradeLasso will:
- Create a new batch job record and assign it a unique batch ID
- Begin processing each row in your CSV sequentially
- Display a live progress indicator showing the current row and percentage complete
- Stream results into the results table as each row is processed
Processing time
Processing speed depends on the number of rows. As a rough guide:
- 50 rows — a few seconds
- 200 rows — under a minute
- 1,000 rows — a few minutes
Do not close the tab while processing is in progress, as this will interrupt the job. Results are saved to your batch job history as they are completed, so partial results are preserved even if the job is interrupted.
After processing completes
Once all rows are processed, you will be shown the full results table. TradeLasso will also send you a batch completion notification (if email notifications are enabled). See Reading Batch Results for a guide to interpreting the output.