Preparing Your CSV File

File requirements

• Format: .csv (comma-separated values) only. Excel .xlsx files are not supported — export to CSV first.
• Size limit: 5 MB maximum
• Encoding: UTF-8 recommended. Files with special characters in non-UTF-8 encodings may display incorrectly.
• Headers: The first row must contain column headers. TradeLasso uses these to identify which column holds entity names.
• No empty files: The file must contain at least one data row below the header row.

Required column: Entity name

Your CSV must contain at least one column with the names of the entities you want to screen. The column can have any header — you will map it to the entity name field during the upload process. Examples of valid column headers:

• Company Name
• Vendor
• Customer
• Entity
• Full Name

Optional column: Country

Including a country column improves screening accuracy by providing geographic context. The country value is used as a hint during matching but does not restrict which lists are searched. Examples:

• Country
• Country of Origin
• Jurisdiction

Country values can be full names (United States) or ISO 2-letter codes (US).

Example CSV structure

Company Name,Country,Invoice Number
Acme Trading Co,Germany,INV-001
Beta Supplies Ltd,United Arab Emirates,INV-002
Sigma Industrial,Unknown,INV-003

In this example, you would map Company Name as the entity column and Country as the optional country column. The Invoice Number column will be preserved in your exported results but is not used for screening.

Row limits by plan

The maximum number of rows per batch job depends on your plan. If your file exceeds the limit, you will see an error during upload. In that case, split your file into smaller batches or upgrade your plan. See the pricing page for current row limits.

Common issues