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I'm running Windows 11 TT Home and Business Desktop and I keep getting an error message:  

An XML document that represents a binary attachment must have a valid reference to an attached

Data in the return is missing or invalid and cannot be electronically filed at this time. If Form 7206(s) are in the return, review the form(s) for accuracy and errors. If the form(s) is attached in error delete it and resubmit the return for electronic filing. If necessary, make the appropriate change and re-submit this return electronically. However, if the reject continues, file this return via U.S. Mail, print this federal return and mail it to the appropriate IRS Service"

 

I have cleared cache/cookies, I have reloaded TT, I have deleted Form 7206 and re-entered the data (we need it for the Long Term Care insurance deduction)...nothing is helping.   Any suggestions?