It looks like Wi will not accept schedule CC from third party software. From 2023 instructions.

The following electronic filing methods for Schedule CC are no longer available: • WI e-file (the department’s prior electronic filing method) • Third-party software.

Here is a link to the 2023 instructions.

chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://www.revenue.wi.gov/TaxForms2023/2023-ScheduleCC-Inst.pdf