Error uploading a contact list

If you've encountered an error when trying to upload a contact list to Closum, there may be different reasons for this.

Here are some possible causes and how to resolve them:

Incorrect file format - Make sure the file is in .CSV format and follows the correct structure.

Incompatible fields - Check that the column names match the template required by Closum.

Mapped fields - Confirm that all the fields in the file have been correctly associated with the Closum fields during the import process.

Missing or incorrect data - Check that all entries are filled in correctly and that there are no invalid characters.

File size exceeded - If the list is too large, try splitting it into smaller files and uploading it again.

If the problem persists, we recommend consulting the Closum documentation or contacting the support team for assistance.

Updated on: 08/07/2025