Client that is a single member LLC will be electing to be treated as an S corporation for tax purposes. Form 2553 will be filled out using the federal identification number of the LLC and sent to IRS. Once the LLC is accepted by IRS to be treated as an S corporation, form 1120s and 100S will be filed. LLC’s have SOS numbers but not 7 digit corporation ID numbers that I am aware of. How does the LLC electing to be treated as an S corporation electronically file a California 100s if it does not have the 7 digit number?