The Department will accept both the 12-digit permit number and 9-digit permit number when filing withholding returns, W-2s, and 1099s. 

All permits issued after November 15, 2021 will have a 9-digit number. The Department recommends using the 9-digit number when possible. 12-digit numbers were assigned to permits issued before November 15, 2021. As part of the Department's efforts to modernize technology, new 9-digit permit numbers were assigned as accounts were migrated into GovConnectIowa.

tax.iowa.gov/what-withholding-permit-number-do-i-use-file

Is this a Sage Issue or an Aatrix issue?  Under Sage Company Tax Group Set up, you can enter the new 9-digit number (1-23-456789) but under the Aatrix w-2 form, it will only accept the old 12 digit number.  What does one do if the company ONLY has a 9-digit number?  Is this field in some other location?