Are you using the SSN as the missing digits?

Are you sure you have the proper number?

Have you read the instructions for the form you are filing?

For Individual:

Hawaii Tax Identification Number
If you are operating a business or practicing a profession as a sole proprietorship in Hawaii, enter your Hawaii Tax Identification Number for this activity.

If you are not operating a business or practicing a profession as a sole proprietorship in Hawaii, and do not have a Hawaii Tax Identification Number for this activity, leave the boxes blank.