Why do I get an error while trying to Bulk Upload Keywords?

You can upload Keywords only in XLS or CSV format and NO other format is accepted by the system. You may encounter an error – if you have selected Option 1 [that expects you to upload sheet with 3 columns: Keyword(with Match Type),CPC,Destination URL] and instead you tried uploading Keyword sheet formatted based on Option 2 [that expects you to upload sheet with 4 columns Format 2 Keyword,Match Type,CPC,Destination URL]. To avoid an error, please choose the appropriate option & ensure that your sheet has been formatted accordingly.

NOTE: Maximum keyword upload file size can be up to or equal to 3MB.