3/8/21
MO has resolved the issued on their end. For any MO returns rejected with Reject Code MO1040-0022, they can be resubmitted at this time.
We have opened Issue 5631 regarding MO Reject Code MO1040-0022 which states, “Taxable Social Security reported on Form MO-A, Part 3, Section A, B, and C is not equal“. MO has indicated this is an issue on their end and will notify us when this issue has been resolved. At this time, if you have any impacted MO returns with this reject code, please do not resubmit until this blog post has been updated.