The following diagnostic is generating:
Taxpayer's name is being truncated in the e-file. The IRS may delay the posting of the taxpayer's return and, if applicable, any refund. Shorten the taxpayer's or spouse's name using the following priority: a. Omit titles such as M. D. or Ph. D. which are not part of the taxpayer's given name. b. Input middle initial instead of keying the entire middle name. c. Omit the spouse's middle initial. d. Omit the taxpayer's middle initial. e. Substitute initial for spouse's given name. f. Substitute initial for taxpayer's given name.
Solution:
This often comes up if the spouses have different last names. The only way to resolve it is to remove characters from the name fields until it goes away.
Start with suffixes like Jr, SR, etc. Then middle initials. After that, you can delete what you need to, but don't remove the first four of either last name or it will likely reject for Name Control issues.