Document structure error: Translated text length for Name "[file name]"

Error message when cleaning up an excel file:
Document structure error: Translated text length for Name "[file name]" is longer than the allowed 31 character. Please change the text and try again.

POssible solution:
This is actually an error from excel, not trados. Excel does not accept more than 31 characters in the names of the sheets. So if you get this message there's no other choice but to shorten the translation.

that´s right...

and similiar thing happens to the tab names

Yes, I had the same problem before