@Goro7731 wrote:
My understanding is the 1065-X must be filed with the 'service center' that the original return was filed at; however, my original return was e-filed. How can I find out the service center?
Locate the mailing address for your original 1065 at the IRS link below. Mail the 1065-X to that address.
https://www.irs.gov/filing/where-to-file-your-taxes-for-form-1065
