# Data Types

- 1 Articles

[Error importing list custom field data types (CFDT)](https://help.hyperscience.ai/docs/error-importing-list-custom-field-data-types-cfdt)

- Published on Sep 24, 2024

Issue When importing a CSV containing a list of custom field data types, the following error appears: “Import Error: Upload failed. Please ensure the file follows the upload guidelines.” Affected versions All versions Affected context...