"Multiple Root Elements at line 3 pos. 28" error when generating target translations for IDML file


I have a IDML target file and translated SDLXLIFF files and I am trying to generate the final translated IDML documents. When I go to generate the target translations, I get the following erorr from Trados:

"Multiple Root Elements at line 3 pos. 28" 

I currently cannot complete the translations for this document.

Please help!